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Class Information
Number: 181/400
Name: Acoustics > Wave coupling
Description: Elements or material for transforming sound wave energy from high to low pressure and vice versa.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6751162 |
Seismic sensor |
Jun. 15, 2004 |
| 6065562 |
System for imparting compressional and shear waves into the earth |
May. 23, 2000 |
| 5477506 |
In-flow acoustic sensor |
Dec. 19, 1995 |
| 5289436 |
Ultrasonic waveguide |
Feb. 22, 1994 |
| 4997705 |
Window for acoustic wave form and method for making |
Mar. 5, 1991 |
| 4920796 |
Tank level meter |
May. 1, 1990 |
| 4896535 |
Tank level meter |
Jan. 30, 1990 |
| 4856614 |
Process and device for seismic prospecting of a medium with induced waves created artificially in a bore-hole |
Aug. 15, 1989 |
| 4850450 |
Logging tool housing with acoustic delay |
Jul. 25, 1989 |
| 4787070 |
Coupler for ultrasonic transducer probe |
Nov. 22, 1988 |
| 4754443 |
Airgun having shaft-bearing-guided shuttle and capable of fast repitition self-firing |
Jun. 28, 1988 |
| 4580251 |
Ultrasonic distance sensor |
Apr. 1, 1986 |
| 4442512 |
Ultrasonic wave transmitting and receiving device for vehicles |
Apr. 10, 1984 |
| 4433398 |
Ultrasonic transducer |
Feb. 21, 1984 |
| 4228530 |
Mud level monitor |
Oct. 14, 1980 |
| 4195523 |
Ultrasonic thermometer |
Apr. 1, 1980 |
| 4149139 |
Ultrasonic transmission device |
Apr. 10, 1979 |
| 4101865 |
Sonic echo-sounder for the measurement of levels of substances |
Jul. 18, 1978 |
| 3946831 |
Acoustic transmitter |
Mar. 30, 1976 |
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