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Class Information
Number: 367/87
Name: Communications, electrical: acoustic wave systems and devices > Echo systems
Description: Subject matter wherein intelligence or information about a foreign object or other discontinuity in the medium is communicated in an acoustic wave reflected from the object or other discontinuity.

Sub-classes under this class:

Class Number Class Name Patents
367/99 Distance or direction finding 500
367/92 Parametric sonar 52
367/93 Presence or movement only detection 272
367/95 Returned signal used for control 100
367/88 Side scanning or contour mapping sonar systems 230
367/89 Speed determination 108

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7538720 Simultaneous savings in bandwidth and energy using waveform design in presence of interference and noise May. 26, 2009
7532747 Method and apparatus for ultrasonic imaging in mmode May. 12, 2009
7518543 Method for determining positions of targets by bistatic measurements using signals scattered by the targets Apr. 14, 2009
7500953 High contrast optoacoustic imaging using nanoparticles Mar. 10, 2009
7492666 Sonar system having multiple pulse sequences Feb. 17, 2009
7457198 Swimmer detection sonar network Nov. 25, 2008
7420876 Obstacle sensor having supersonic sensor Sep. 2, 2008
7317659 Measurement of air characteristics in the lower atmosphere Jan. 8, 2008
7245557 Sonar Jul. 17, 2007
7239263 Platform shake compensation method in synthetic aperture processing system Jul. 3, 2007
7196656 Apparatus for estimating direction of arrival of signal Mar. 27, 2007
7187320 Matched maneuver detector Mar. 6, 2007
7180442 Target indentification method using cepstral coefficients Feb. 20, 2007
7178408 Sodar sounding of the lower atmosphere Feb. 20, 2007
7138938 System and method for preemptively sensing an object and selectively operating both a collision countermeasure system and a parking assistance system aboard an automotive vehicle Nov. 21, 2006
7129888 High speed weighting signal generator for sidelobe canceller Oct. 31, 2006
7130243 Location finding system, using reflected radio frequency or acoustic signals in a crowded reflector environment Oct. 31, 2006
7109918 Nonlinear beam forming and beam shaping aperture system Sep. 19, 2006
7095364 Altitude measurement system and associated methods Aug. 22, 2006
7095359 Method of observing sea ice Aug. 22, 2006
7091902 Systems and methods for characterizing the coverage of ad hoc sensor networks Aug. 15, 2006
7072244 Underwater exterior ship hull imaging system employing a remote microprocessor controlled acoustic transducer array Jul. 4, 2006
7054226 Method and apparatus for echolocation May. 30, 2006
7030806 Time domain radio transmission system Apr. 18, 2006
7027356 Method and device for detecting objects, especially used as a parking assistance device in a motor vehicle Apr. 11, 2006
6987707 Method and system for in-air ultrasonic acoustical detection and characterization Jan. 17, 2006
6985406 Inteferometric synthetic sonar antenna Jan. 10, 2006
6972678 Wireless-based system and method for hull-based sensing Dec. 6, 2005
6952001 Integrity bound situational awareness and weapon targeting Oct. 4, 2005
6943726 Device for searching a parking space Sep. 13, 2005
6933934 Time-gain controlling method and apparatus, recording medium and ultrasonic imaging apparatus Aug. 23, 2005
6909397 Stabilizing motion in a radar detection system using ultrasonic radar range information Jun. 21, 2005
6850186 System for determining position and velocity of targets from signals scattered by the targets Feb. 1, 2005
6748803 Liquid measurement system and shared interface apparatus for use therein Jun. 15, 2004
6697299 Individual authentication method, individual authentication apparatus, information communication apparatus equipped with the apparatus, and individual authentication system including the appar Feb. 24, 2004
6617996 Ground penetrating radar with audible output Sep. 9, 2003
6573855 Three-dimensional questing method, three-dimensional voxel data displaying method, and device therefor Jun. 3, 2003
6567039 Road-shape recognition system May. 20, 2003
6561031 Prodder with force feedback May. 13, 2003
6545945 Material classification apparatus and method Apr. 8, 2003
6545946 Method and apparatus for eliminating substantially false echoes produced by electrical noise induced into high gain receiver circuits Apr. 8, 2003
6536062 Prodder with force feedback Mar. 25, 2003
6535158 Kinematic analysis of conically scanned environmental properties Mar. 18, 2003
6466514 Method for elimination of passive noise interference in sonar Oct. 15, 2002
6427532 Device for measuring a fill level of a liquid in a container Aug. 6, 2002
6418787 Level transmitter for a liquid container and method for determining the level in a liquid container Jul. 16, 2002
6421299 Single-transmit, dual-receive sonar Jul. 16, 2002
6415666 Method and apparatus for acoustic detection of mines and other buried man-made objects Jul. 9, 2002
6418080 Underwater detection apparatus Jul. 9, 2002
6396433 Talking buried object detector May. 28, 2002

1 2 3 4 5

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