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Class Information
Number: 367/6
Name: Communications, electrical: acoustic wave systems and devices > Transponders > With plurality of transponders
Description: Subject matter in which two or more receiver-transmitter devices are employed.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8600592 Homing system and method for an autonomous underwater vehicle Dec. 3, 2013
8217794 Active RFID system for port logistics using multi-hop communication and communication method in the system Jul. 10, 2012
7800513 High performance communication system Sep. 21, 2010
RE41629 Ultrasonic transceiver and remote controlled devices for pets Sep. 7, 2010
7490428 High performance communication system Feb. 17, 2009
7474208 Method and system for locating an object Jan. 6, 2009
7307537 Identification tag Dec. 11, 2007
6919793 Radio frequency identification system write broadcast capability Jul. 19, 2005
6674687 System and method for navigation using two-way ultrasonic positioning Jan. 6, 2004
6233202 Dipping sonar transducer housing May. 15, 2001
6163503 System, apparatus, and method for geographic positioning of marine fauna Dec. 19, 2000
5942987 Radio frequency identification system with write broadcast capability Aug. 24, 1999
5872516 Ultrasonic transceiver and remote controlled devices for pets Feb. 16, 1999
5812065 Modulation of the resonant frequency of a circuit using an energy field Sep. 22, 1998
5691957 Ocean acoustic tomography Nov. 25, 1997
5504477 Tracking system Apr. 2, 1996
5497356 Method and apparatus for verifying the location of a seismic bottom cable in real time Mar. 5, 1996
5469403 Digital sonar system Nov. 21, 1995
5452262 Radio telemetry buoy for long-range communication Sep. 19, 1995
5426617 Long baseline tracking system Jun. 20, 1995
5392771 Underwater monitoring and communication system Feb. 28, 1995
5346210 Object locator system Sep. 13, 1994
5331602 Acoustic navigation and diving information system and method Jul. 19, 1994
5185725 Diver locator system Feb. 9, 1993
5062088 Acoustic measuring system Oct. 29, 1991
5047990 Underwater acoustic data acquisition system Sep. 10, 1991
5008860 Position and velocity measuring system Apr. 16, 1991
4924446 Navigation system and method for determining the position of a relatively noisy platform using underwater transponders May. 8, 1990
4870626 Method for determining the position of a marine seismic receiver cable Sep. 26, 1989
4813025 Safety alert and locating system Mar. 14, 1989
4799825 Oil transfer system Jan. 24, 1989
4725988 System for deploying an array of sonar projectors Feb. 16, 1988
4669067 Method and apparatus for locating a submerged marine streamer May. 26, 1987
4635236 Submerged marine streamer locator Jan. 6, 1987
4621262 Method of and a system for remote control of electronic equipments Nov. 4, 1986
4590591 Acoustic distance measuring apparatus and method of use May. 20, 1986
4555779 Submerged marine streamer locator Nov. 26, 1985
4532617 System for locating a towed marine object Jul. 30, 1985
4516226 Acoustic positioning system May. 7, 1985
4513401 Marine cable location system Apr. 23, 1985
4486861 Transponder telemetry Dec. 4, 1984
4388710 Submarine cable tension telemetering system Jun. 14, 1983
4376301 Seismic streamer locator Mar. 8, 1983
4311045 Device for measuring sea currents at great depths Jan. 19, 1982
4308749 Device for measuring in real time sea currents in deep water Jan. 5, 1982
4247922 Object position and condition detection system Jan. 27, 1981
4229809 Acoustic under sea position measurement system Oct. 21, 1980
4203160 Submarine communication May. 13, 1980
4197591 Facsimile recording of sonic values of the ocean bottom Apr. 8, 1980
4176338 High resolution acoustic navigation system Nov. 27, 1979

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