| Class 367 | COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES |
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![[List of Pre Grant Publications for class 367 subclass 1]](../as.gif) | ![[List of Patents for class 367 subclass 1]](../ps.gif) | 1 | SONAR COUNTER-MEASURES |
| | 2 | TRANSPONDERS |
| | 7 | ACOUSTIC IMAGE CONVERSION |
| | 12 | BEAM STABILIZATION OR COMPENSATION |
| | 13 | TESTING, MONITORING, OR CALIBRATING |
| | 14 | SEISMIC PROSPECTING |
| | 15 |  Offshore prospecting |
| | 16 |  Transducer position control |
| | 19 | Transducer cable location determination |
| | 20 | Multiple hydrophone cable systems |
| | 21 | Signal processing |
| | 25 | Well logging |
| | 26 | Threshold set system |
| | 27 | Time interval measurement |
| | 28 | Amplitude measurement |
| | 29 |  Peak amplitude |
| | 30 | Amplitude comparison |
| | 31 | Of noncompressional acoustic wave energy |
| | 32 | Frequency dependent determination |
| | 33 | Depth recording or control |
| | 34 | Received signal cycle discrimination |
| | 35 | Borehole or casing condition |
| | 36 | Land-refraction type |
| | 37 | Land-reflection type |
| | 38 | Signal analysis and/or correction |
| | 39 | Random signal correlation |
| | 40 | Received correlation |
| | 41 | Transmitted correlation |
| | 42 | Standard correlation |
| | 43 | Filters |
| | 47 | Amplitude |
| | 48 | Phase |
| | 49 | Frequency |
| | 50 | Timing correction |
| | 55 | Timing mark generation |
| | 56 | Particular source-receiver array |
| | 58 | By receiver pattern arrangement |
| | 59 | Compositing system |
| | 64 | Optical processing |
| | 65 | Gain control |
| | 68 | Display systems |
| | 73 | Synthetic seismograms and models |
| | 74 | Format conversion |
| | 75 | Shear wave |
| | 76 | Telemetry |
| | 81 | WELLBORE TELEMETERING |
| | 86 | BOREHOLE TESTING |
| | 87 | ECHO SYSTEMS |
| | 88 | Side scanning or contour mapping sonar systems |
| | 89 | Speed determination |
| | 92 | Parametric sonar |
| | 93 | Presence or movement only detection |
| | 95 | Returned signal used for control |
| | 99 | Distance or direction finding |
| | 117 | PLURAL TRANSMITTERS TO RECEIVER OR TRANSMITTER TO PLURAL RECEIVERS |
| | 197 | SELECTIVE (E.G., REMOTE CONTROL) |
| | 198 | Humanly generated sound or speech responsive (e.g., human whistle) |
| | 199 | Frequency responsive actuation |
| | 118 | DISTANCE OR DIRECTION FINDING |
| | 119 | With beam steering, scanning, or focussing |
| | 124 | By combining or comparing signals |
| | 127 | With time interval measuring means |
| | 128 | With electromagnetic wave |
| | 129 | With plurality of transducers |
| | 130 | With towing |
| | 131 | UNDERWATER SYSTEM |
| | 135 | RECEIVER CIRCUITRY |
| | 137 | TRANSMITTER SYSTEMS |
| | 140 | SIGNAL TRANSDUCERS |
| | 141 | Underwater type |
| | 142 | Exclusive-type transmitter |
| | 143 | Hydraulically driven vibrator |
| | 144 | Air guns |
| | 145 | Explosives |
| | 146 | Implosion devices |
| | 147 | Spark discharge devices |
| | 148 | Electrically driven underwater bells or sirens |
| | 149 | Exclusive-type receiver |
| | 150 | With modifying lens |
| | 151 | With reflector |
| | 152 | With impedance matching means |
| | 153 | Plural transducer array |
| | 157 | Piezoelectric |
| | 158 | Head and tail mass |
| | 159 | Elongated cylindrical element |
| | 160 | Bending type |
| | 162 | With resonant or damping structure |
| | 163 | With diaphragm |
| | 164 | Single element having a plurality of electrodes |
| | 165 | Specific support structure |
| | 166 | Liquid filled |
| | 167 | Pressure compensating means |
| | 168 | Magnetostrictive |
| | 169 | Elongated continuous type |
| | 170 | Electret |
| | 171 | Liquid filled transducer |
| | 172 | Transducer with pressure compensating means |
| | 173 | Transducer with support |
| | 174 | Transducer with diaphragm |
| | 176 | Transducer with resonant or damping structure |
| | 177 | Towed land cables |
| | 178 | Receivers |
| | 179 | Pendulum type |
| | 180 | Piezoelectric |
| | 181 | Capacitive |
| | 182 | Moving coil |
| | 185 | Moving magnet |
| | 188 | Casing or housing |
| | 189 | Vibrator-type transmitter |
| | 191 | MISCELLANEOUS |
| CROSS-REFERENCE ART COLLECTIONS | ||
| | 900 | SONAR TIME VARIED GAIN CONTROL SYSTEMS |
| | 901 | NOISE OR UNWANTED SIGNAL REDUCTION IN NONSEISMIC RECEIVING SYSTEM |
| | 902 | SPEED OF SOUND COMPENSATION |
| | 903 | TRANSMIT-RECEIVE CIRCUITRY |
| | 904 | DOPPLER COMPENSATION SYSTEMS |
| | 905 | SIDE LOBE REDUCTION OR SHADING |
| | 906 | AIRBORNE SHOCK-WAVE DETECTION |
| | 907 | COORDINATE DETERMINATION |
| | 908 | MATERIAL LEVEL DETECTION, E.G., LIQUID LEVEL |
| | 909 | COLLISION AVOIDANCE |
| | 910 | PORTABLE SONAR DEVICES |
| | 911 | PARTICULAR WELL-LOGGING APPARATUS |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |