1. 5,590,090 Ultrasonic detector using vertical cavity surface emitting lasers
2. 5,589,650 Apparatus and method for defining molding technological properties of molding substances in casting works
3. 5,589,636 Method of and apparatus for the detection of an ultrasonic field
4. 5,589,635 Automated tapping process for complex parts used for detecting shallow faults
5. 5,588,428 Method and apparatus for non-invasive volume and texture analysis
6. 5,587,534 Wall thickness and flow detection apparatus and method for gas pipelines
7. 5,587,533 Surface feature mapping using high resolution C-scan ultrasonography
8. 5,586,085 Container and adaptor for use with fluid volume sensor
9. 5,585,565 Method for the ultrasonic inspection of pipe and tubing and a transducer assembly for use therewith
10. 5,585,564 Ultrasonic inspection system for laminated stiffeners
11. 5,585,563 Non-contact thickness measurement using UTG
12. 5,585,546 Apparatus and methods for controlling sensitivity of transducers
13. 5,583,828 Method and apparatus for detection of edge position thickness or splice position of a material web
14. 5,583,433 Apparatus for measuring length using ultrasonic delay line and matching a phase of drive pulse with reflected pulse
15. 5,583,301 Ultrasound air velocity detector for HVAC ducts and method therefor
16. 5,583,293 Sonic or ultrasonic transducer
17. 5,583,292 Ultrasonic measuring process for the wall thickness curve of a weld seam of a pipe
18. 5,583,280 Air bubble sensor with simplified mounting of piezo elements
19. 5,582,176 Methods and apparatus for automatically determining edge frequency in doppler ultrasound signals
20. 5,581,037 Nondestructive evaluation of pipes and tubes using magnetostrictive sensors
21. 5,581,036 Bandwidth sampling technique for digital focusing in array imaging systems
22. 5,579,770 Multiple transmit zone splicing
23. 5,579,768 Automatic gain compensation in an ultrasound imaging system
24. 5,578,758 Rail investigating ultrasonic transducer
25. 5,576,503 Pumping system
26. 5,574,224 Process and device for the continuous nondestructive control of rails on a railway line by ultrasonics
27. 5,574,223 Scan assembly and method using scan rate modulation
28. 5,574,212 Automated system and method for testing resolution of ultrasound scanners
29. 5,573,041 Dispenser control with ultrasonic position detection
30. 5,571,968 Apparatus for mounting a plurality of ultrasonic probes for movement in specified directions for detecting defects in a body
31. 5,570,691 Method and apparatus for real-time, concurrent adaptive focusing in an ultrasound beamformer imaging system
32. 5,570,302 Distance measuring device, and coordinate input apparatus utilizing the same
33. 5,569,854 Apparatus and method for transmitting and receiving ultrasonic waves having an acoustoelectric, ultrasonic transducer
34. 5,569,853 Ultrasonic measuring apparatus which minimizes the number of digital values treated by processing means
35. 5,569,844 Method and apparatus for determining the particle size distribution, the solids content and the solute concentration of a suspension of solids in a solution bearing a solute
36. 5,569,835 Reference wire compensation method and apparatus
37. 5,568,818 Method and device for determining the density of a stream of fibrous material on a cigarette manufacturing machine
38. 5,568,811 Method for motion encoding of tissue structures in ultrasonic imaging
39. 5,568,449 Methods and apparatus for use in ultrasonic ranging
40. 5,565,628 Ultrasonic transducer with backing layer and acoustic matching layer having electrorheological fluid therein
41. 5,565,627 Ultrasonic edge detector and control system
42. 5,563,346 Method and device for imaging an object using a two-dimensional ultrasonic array
43. 5,563,345 Device for ultrasonic identification of fingerprints
44. 5,560,242 Ultrasonic system evaluation phantoms
45. 5,559,292 Method and apparatus for the identification of species
46. 5,558,836 Emission detection systems for determining the presence of contaminants
47. 5,557,969 Apparatus and method for detection ultrasonic waves propagated from within a selected distance
48. 5,557,047 Method and apparatus for ultrasonic wave measurement
49. 5,553,500 Triaxial normal and shear force sensor
50. 5,553,499 Ultrasonic microscope having an automatic focusing adjustment mechanism
51. 5,551,433 Method and apparatus for a geometric aberration transform in an adaptive focusing ultrasound beamformer system
52. 5,551,296 Method and device for revealing defects in materials and their connections
53. 5,551,295 Method and apparatus using ultrasonic and light waves for identification of test specimens
54. 5,549,111 Method and apparatus for adjustable frequency scanning in ultrasound imaging
55. 5,549,004 Hand held tube wall thickness ultrasonic measurement probe and system
56. 5,549,003 Method and apparatus for visualization of internal stresses in solid non-transparent materials by ultrasonic techniques and ultrasonic computer tomography of stress
57. 5,549,002 Method for detecting and characterizing flaws in engineering materials
58. 5,549,001 Set of ultrasonic probeheads for measurements of times of flight of ultrasonic pulses
59. 5,548,530 High-precision leak detector and locator
60. 5,546,946 Ultrasonic diagnostic transducer array with elevation focus
61. 5,546,813 Apparatus for determining fluid flow
62. 5,546,807 High speed volumetric ultrasound imaging system
63. 5,544,658 Doppler ultrasound velocity estimation
64. 5,544,655 Ultrasonic multiline beamforming with interleaved sampling
65. 5,542,298 Method for determining physical stage parameters of a medium and an apparatus for carrying out same
66. 5,540,230 Diffracting doppler-transducer
67. 5,540,105 Funnel inlet and funnel outlet for ultrasonic gas meters
68. 5,540,098 Transfer device
69. 5,540,097 Ultrasonic microscope apparatus
70. 5,540,096 Method for the non-destructive evaluation of prestressed concrete structures
71. 5,537,876 Apparatus and method for nondestructive evaluation of butt welds
72. 5,537,875 Ultrasonic method for the inspection of spat welds between metal plates
73. 5,537,854 Acoustic natural gas fuel sensor
74. 5,535,628 Ultrasonic scanner head and method
75. 5,535,136 Detection and quantification of fluid leaks
76. 5,533,411 Method and apparatus for nondestructive testing of physical characteristics of a specimen using ultrasonic waves
77. 5,533,408 Clamp-on ultrasonic volumetric flowmeter
78. 5,533,402 Method and apparatus for measuring acoustic parameters in liquids using cylindrical ultrasonic standing waves
79. 5,533,401 Multizone ultrasonic inspection method and apparatus
80. 5,533,398 Method and apparatus for testing lead connections of electronic components
81. 5,531,125 Method and device for simultaneously measuring the flow speed and the depth of a river
82. 5,531,124 Ultrasonic flow measuring method and apparatus thereof
83. 5,531,118 Method and device for operating an ultrasonic sensor
84. 5,531,117 Closed loop maximum likelihood phase aberration correction in phased-array imaging systems
85. 5,529,753 System for ultrasonic energy coupling by irrigation
86. 5,526,699 Ultrasonic gas flow measurement method and apparatus
87. 5,526,691 Detection of corrosion fatigue cracks in membrane boiler tubes
88. 5,526,689 Acoustic emission for detection of corrosion under insulation
89. 5,526,682 Method and apparatus for analyzing sample solutions
90. 5,526,674 Method and apparatus for improved flow rate measurement and calibration
91. 5,525,854 In-plane ultrasonic velocity measurement
92. 5,524,636 Method and apparatus for elasticity imaging
93. 5,524,626 System and method for determining local attenuation for ultrasonic imaging
94. 5,522,878 Solid multipurpose ultrasonic biomedical couplant gel in sheet form and method
95. 5,522,393 Multi-dimensional real-time ultrasonic blood flow imaging apparatus and method
96. 5,522,265 Device for the ultrasonic measuring of the defects of a railway track
97. 5,522,264 Method and apparatus for detecting and measuring gelled pigs in tubulars
98. 5,522,263 Apparatus and method for inspecting soldering condition of electronic component by using ultrasonic oscillation
99. 5,520,184 Ultrasonic diagnostic method and an ultrasonic diagnostic apparatus for carrying out the same
100. 5,515,733 Ultrasonic transducer system with crosstalk isolation
101. 5,515,728 Ultrasonic fixture assembly for holding multiple ultrasonic transducers
102. 5,515,721 Local river flow velocity measuring method and apparatus therefor
103. 5,515,298 Apparatus for determining surface structures
104. 5,513,535 Method and device for measurement of the flow velocities of gases and/or of quantities that can be derived from same
105. 5,513,533 Detection of vibrational energy via optical interference patterns
106. 5,513,532 Method and apparatus for detecting internal defects
107. 5,513,531 Ultrasonic system for measurement of thin layers
108. 5,513,528 Logging while drilling method and apparatus for measuring standoff as a function of angular position within a borehole
109. 5,513,527 Fuel-gauging systems
110. 5,511,425 Flaw detector incorporating DGS
111. 5,511,423 Ultrasonic diagnostic apparatuses and methods therefor
112. 5,509,299 Apparatus for determining physical properties of fluids
113. 5,507,185 Adaptive scanning technique for ultrasonic testing utilizing realtime lift-off detection
114. 5,507,184 Process and apparatus for activating a time gate in the ultrasonic testing of materials using the impulse-echo system
115. 5,507,183 Ultrasonic method and apparatus for detecting and identifying contamination such as ice on the surface of a structure
116. 5,507,178 Liquid presence and identification sensor
117. 5,505,090 Method and apparatus for non-destructive inspection of composite materials and semi-monocoque structures
118. 5,505,089 Scanner head assembly and couplant system therefore
119. 5,503,152 Ultrasonic transducer assembly and method for three-dimensional imaging
120. 5,503,035 Ultrasonic fluid vibrating flowmeter
121. 5,503,019 Method and apparatus for ultrasonically inspecting the surface of the bore of a railroad wheel axle
122. 5,502,389 Apparatus for polyelectrolyte measurement with an ultrasonically driven liner
123. 5,501,104 Method of measuring the depth of full-cut dicing grooves by using an ultrasonic detector and a dicing apparatus for carrying out the same
124. 5,499,540 Electromagnetic acoustic transducer for bolt tension and load measurement
125. 5,497,662 Method and apparatus for measuring and controlling refracted angle of ultrasonic waves
126. 5,495,766 Ultrasonic sensor
127. 5,495,765 Ultrasonic inspection system with improved electrical isolation scheme using step-up transformers
128. 5,493,916 Mode suppression in fluid flow measurement
129. 5,493,912 Ultrasonic probe suitable for acoustic coupling via a water channel
130. 5,493,911 System for measuring the ultrasonic velocity in the thickness direction of moving webs without errors due to delays in the onset of digitization
131. 5,493,910 Method and system of measuring ultrasonic signals in the plane of a moving web
132. 5,492,134 Ultrasonic diagnostic transducer array with elevation focus
133. 5,492,017 Inductive pressure transducer
134. 5,492,014 Ultrasonic transducer for monitoring acoustic emissions
135. 5,492,013 Method and apparatus for acoustic testing of armatures
136. 5,492,012 Time-of-flight method for sizing cracks through fluid-filled gaps in structures
137. 5,488,867 Strip measuring and centering system
138. 5,488,853 Measurement arrangement for calibrating ultrasonic shock wave sensors
139. 5,487,389 Ultrasonic Doppler imager having an adaptive tissue rejection filter with enhanced tissue motion sensitivity
140. 5,487,306 Phase aberration correction in phased-array imaging systems
141. 5,485,751 Method for longitudinal, transverse and oblique error testing of work pieces by means of ultrasound, according to the impulse-echo method
142. RE35,148 Frequency diversity for image enhancement
143. 5,483,965 Ultrasonic densitometer device and method
144. 5,483,963 Two dimensional transducer integrated circuit
145. 5,483,226 Ultrasonic detector, detection method for liquid media and ultrasonic transmitter control method
146. 5,481,918 Acoustic lens system
147. 5,481,917 Ultrasonic inspection and imaging instrument
148. 5,481,916 Combined ultrasonic and rotating eddy current probe and method of non-destructive testing of materials
149. 5,479,825 Transducers for transmitting and/or receiving ultrasonic energy
150. 5,477,859 Ultrasound imaging system having spatial filtering preprocessor
151. 5,477,736 Ultrasonic transducer with lens having electrorheological fluid therein for dynamically focusing and steering ultrasound energy
152. 5,476,098 Partially coherent imaging for large-aperture phased arrays
153. 5,476,011 Method and apparatus for ultrasonically testing sheet materials using rotating test heads
154. 5,476,010 Hands-free ultrasonic test view (HF-UTV)
155. 5,475,620 Ultrasonic measuring system
156. 5,475,613 Ultrasonic defect testing method and apparatus
157. 5,474,073 Ultrasonic diagnostic scanning for three dimensional display
158. 5,473,953 Device for inspecting vessel surfaces
159. 5,473,943 Ultrasonic test device
160. 5,473,934 Ultrasonic fluid composition monitor
161. 5,471,879 Ultrasonic process for testing, by immersion, a metal piece and use thereof
162. 5,471,878 Method of suppressing grain noise in ultrasonic waveform data by 3D filtering
163. 5,471,877 Environmental stress screening process with liquid coupled vibration
164. 5,469,851 Time multiplexed digital ultrasound beamformer
165. 5,469,850 Ultrasonic diagnostic system
166. 5,469,744 Apparatus for acoustically inspecting a workpiece
167. 5,469,743 Dynamic surface wave roll inspection device
168. 5,469,736 Apparatus and method for measuring a borehole
169. 5,467,944 Detector for indicating ice formation on the wing of an aircraft
170. 5,467,655 Method for measuring properties of cold rolled thin steel sheet and apparatus therefor
171. 5,467,637 Method of measuring gas purity information, chamber unit and exposure unit using the method and a device production method
172. 5,467,321 Insertion ultrasonic transducer with mode conversion and method for reducing multiple signal reception
173. 5,465,722 Synthetic aperture ultrasound imaging system
174. 5,465,625 Heat measurement apparatus for inspecting therapeutic energy waves
175. 5,463,906 Interchangeable disposable acoustic for use with an ultrasonic flowmeter, particularly during extracorporeal measurement of blood flow
176. 5,463,905 Portable non-invasive flowmeter for partially filled pipe
177. 5,461,931 Measurement system
178. 5,461,921 Direct-sequence spread-spectrum ultrasonic testing device
179. 5,461,920 Whole-body test system with a test probe mount designed especially as a rotor which is mounted on a vertically adjustable support platform and has a test-piece manipulator
181. 5,460,595 Multi-frequency ultrasound therapy systems and methods
182. 5,460,178 Ultrasonic transmission imaging apparatus and method
183. 5,460,048 Ultrasonic sensor using a polarization maintaining fibre
184. 5,460,047 Flow measurement system including ultrasonic transducers
185. 5,460,046 Method and apparatus for ultrasonic pipeline inspection
186. 5,460,045 Ultrasonic probes for inspection of reactor pressure vessel bottom head and weld buildup thereon
187. 5,458,566 Reservoir volume sensing systems for autologous blood recovery
188. 5,458,120 Ultrasonic transducer with magnetostrictive lens for dynamically focussing and steering a beam of ultrasound energy
189. 5,457,997 Laser ultrasonic detection method and apparatus therefor
190. 5,457,996 Receiving beam former and an ultrasonic imaging system using the same
191. 5,457,994 Nondestructive evaluation of non-ferromagnetic materials using magnetostrictively induced acoustic/ultrasonic waves and magnetostrictively detected acoustic emissions
192. 5,457,640 Method of checking condensate dischargers
193. 5,456,114 Elastic wave sensing system
194. 5,456,113 Nondestructive evaluation of ferromagnetic cables and ropes using magnetostrictively induced acoustic/ultrasonic waves and magnetostrictively detected acoustic emissions
195. 5,456,108 Baffle assembly for ultrasonic liquid level measuring probe
196. 5,455,805 Ultrasonic measuring apparatus having adjustable gain control
197. 5,454,271 Method and apparatus for measuring powder flow rate
198. 5,454,269 Device for coupling an ultrasonic probe to a test specimen by employing two-position reversible valves
199. 5,454,267 Multi-element ultrasonic probe for electronic scanning
200. 5,454,263 Test piece manipulator and corresponding cylindrical test piece with standard defects for setting ultrasonic test equipment
201. 5,454,255 Entrained air measurement apparatus and method
202. 5,454,045 Apparatus and method for identification and recognition of an item with ultrasonic patterns from item subsurface micro-features
203. 5,453,932 Device and method for detecting and elimination of spurious ultrasonic ranging echoes
204. 5,452,621 Ultrasonic gas measuring device incorporating efficient display
205. 5,452,611 Ultrasonic level instrument with dual frequency operation
206. 5,450,752 Ultrasonic position sensor for measuring movement of an object
207. 5,448,916 Method and device for three dimensional measuring of surface
208. 5,448,915 Method for improving the accuracy of ultrasonic thickness measurements by calibrating for surface finish
209. 5,448,911 Method and apparatus for detecting impending sticking of a drillstring
210. 5,447,440 Apparatus for assaying viscosity changes in fluid samples and method of conducting same
211. 5,447,070 Rotor of an ultrasonic test device for detection of oblique deflects
212. 5,445,029 Calibration and flaw detection method for ultrasonic inspection of acoustically noisy materials
213. 5,442,592 Ultrasonic distance meter
214. 5,440,937 Process and apparatus for ultrasonic measurement of volumeric flow through large-diameter stack
215. 5,440,936 Compact x-cross transducer array for a transit time flowmeter, particularly for use during in-vivo blood flow measurement
216. 5,440,930 Ultrasonic measuring assembly and means for attaching same to a vessel
217. 5,440,929 Ultrasonic device for measuring thickness of a tank bottom flat plate
218. 5,440,914 Method of measuring distribution and intensity of ultrasonic waves
219. 5,438,994 Ultrasonic diagnostic image scanning
220. 5,438,868 Noninvasive ultrasonic liquid level indicator
221. 5,438,247 Ultrasonic sensor scanning apparatus and method for detecting objects by use of the scanning apparatus
222. 5,437,194 Ultrasonic transducer system with temporal crosstalk isolation
223. 5,437,178 Controller for ultrasonic sensors
224. 5,435,186 Ultrasonic parametric amplifier
225. 5,433,203 Bone assessment apparatus and method
226. 5,433,117 Ultrasonic gas meter
227. 5,433,113 Probe and apparatus for detecting defects of cylindrical member with surface ultrasonic wave
228. 5,433,112 Ultrasonic characterization of polymer melts under processing conditions
229. 5,433,110 Detector having selectable multiple axes of sensitivity
230. 5,433,104 Method and apparatus for ultrasonic leak location
231. 5,433,102 Ultrasonic wave energy detection and identification
232. 5,431,056 Method for depth compensation of amplitudes of echo-signals in an ultrasonic measuring device which uses the pulse-echo-technique
233. 5,431,054 Ultrasonic flaw detection device
234. 5,431,053 Ultrasonic imaging method and apparatus, using time inversion or signals
235. 5,428,997 Method of and device for fluid surface detection using an ultrasonic transducer
236. 5,428,984 Self test apparatus for ultrasonic sensor
237. 5,426,980 Booted ultrasonic transducer
238. 5,426,979 Frequency spectrum apparatus for determining mechanical properties
239. 5,426,678 Method for ultrasonic inspection of a closely packed array of fuel rods surrounded by a thin-walled metallic channel
240. 5,426,593 Gas content measurement
241. 5,426,341 Sonotrode for ultrasonic machining device
242. 5,425,272 Relative resonant frequency shifts to detect cracks
243. RE34,975 Ultrasonic measurement apparatus
244. 5,423,220 Ultrasonic transducer array and manufacturing method thereof
245. 5,423,219 Defects detection device for fuel rod weldment
246. 5,421,335 Intrinsically collimated ultrasonic transducer
247. 5,421,206 Method and apparatus for mechanical strength testing of components
248. 5,421,203 Modifiable electrodynamic ultrasonic transducer
249. 5,421,200 Ultrasonic fixture assembly for holding multiple ultrasonic transducers
250. 5,419,331 System for estimating target velocity from pulse echoes in response to their correspondence with predetermined delay trajectories corresponding to different distinct velocities
251. 5,419,326 Spirometer, more particularly an ultrasonic spirometer
252. 5,419,196 Ultrasonic side-looker for rail head flaw detection
253. 5,419,195 Ultrasonic booted head probe for motor bore inspection
254. 5,418,823 Combined ultrasonic and eddy-current method and apparatus for non-destructive testing of tubular objects to determine thickness of metallic linings or coatings
255. 5,417,217 Echo beam former for an ultrasonic diagnostic apparatus
256. 5,417,114 Echo based detecting apparatus employing signal generator and correlator
257. 5,415,045 Apparatus and method for detecting flaws in and inspecting an object
258. 5,412,990 Method for measuring cement thickening times
259. 5,410,518 Ultrasonic transducer assembly for measuring liquid level
260. 5,408,884 Apparatus and method for ultrasonic reconstruction and testing of a turbine rotor blade attachment structure
261. 5,408,882 Ultrasonic device and method for non-destructive evaluation of polymer composites
262. 5,408,881 High resolution ultrasonic interferometry for quantitative mondestructive characterization of interfacial adhesion in multilayer composites
263. 5,408,880 Ultrasonic differential measurement
264. 5,408,874 Location of fluid boundary interfaces for fluid level measurement
265. 5,408,867 Method and apparatus for calibrating an ultrasonic leak location
266. 5,407,265 System and method for detecting cutting tool failure
267. 5,406,854 Apparatus for measuring small flows of a fluid bearing ultrasound reflecting bits, on the high frequency ultrasonic doppler principle
268. 5,406,851 Ultrasonic transducer system
269. 5,406,850 Method of non-destructively testing a sputtering target
270. 5,406,849 Method and apparatus for detecting guided leaky waves in acoustic microscopy
271. 5,406,503 Control system for calibrating and driving ultrasonic transducer
272. 5,404,754 Ultrasonic detection of high temperature hydrogen attack
273. 5,404,224 Polarizing optical interferometer having a dual use optical element
274. 5,402,682 Rotor of an ultrasonic test device for rotationally symmetrical test specimens, especially tubes
275. 5,402,681 Ultrasonic micro spectrometer
276. 5,402,233 Furnace control apparatus using polarizing interferometer
277. 5,400,665 Sample introduction system for inductively coupled plasma and other gas-phase, or particle, detectors utilizing an enclosed filter solvent removal system, and method of use
278. 5,400,645 Method and apparatus for ultrasonic leak location
279. 5,400,376 Ultrasonic fuel gauging system using state machine control
280. 5,398,551 Ultrasonic testing method for balls
281. 5,398,538 On-line measurement of ultrasonic velocities in web manufacturing processes
282. 5,398,216 Method for detecting two-dimensional flow for ultrasound color flow imaging
283. 5,394,732 Method and apparatus for ultrasonic detection of air bubbles
284. 5,392,652 Method and apparatus for inspection of metal objects utilizing variable angle ultrasonic transducer
285. 5,392,638 Bubble detecting apparatus for medical infusion device
286. 5,392,631 Range test chamber
287. 5,390,677 Method for assessing and displaying the true three dimensional magnitude of blood velocity
288. 5,390,674 Ultrasonic imaging system with interpolated scan lines
289. 5,390,544 Method and apparatus for non-destructive evaluation of composite materials with cloth surface impressions
290. 5,388,582 Data interpolation processing apparatus
291. 5,388,461 Beamforming time delay correction for a multi-element array ultrasonic scanner using beamsum-channel correlation
292. 5,387,254 Humidity measuring device and a heat cooker employing the device
293. 5,386,830 Ultrasonic pulsed doppler flow measurement system with two dimensional autocorrelation processing
294. 5,386,727 Dynamic rail longitudinal stress measuring system
295. 5,385,051 Ultrasonic test machine with a rotor that has several probes and a transmission device for connecting the probes to a stationary electronic device
296. 5,383,457 Method and apparatus for processing images
297. 5,383,366 Ultrasonic two probe system for locating and sizing
298. 5,383,365 Crack orientation determination and detection using horizontally polarized shear waves
299. 5,381,695 Apparatus for investigating a sample with ultrasound
300. 5,381,693 Ultrasonic imaging apparatus with synthesized focus and setting range markings
301. 5,379,642 Method and apparatus for performing imaging

Rolf Diederichs updated 04. Jan 1997 info@ndt.net