 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| DF | CLASS NOTES | |
| 1 | DF | SONAR COUNTER-MEASURES |
| 2 | DF | TRANSPONDERS |
| 3 | DF | .~ Sonobuoys and sonobuoy systems |
| 4 | DF | .~.~ With component activating or deployment means |
| 5 | DF | .~.~ With plurality of sonobuoys |
| 6 | DF | .~ With plurality of transponders |
| 7 | DF | ACOUSTIC IMAGE CONVERSION |
| 8 | DF | .~ Acoustic holography |
| 9 | DF | .~.~ Seismic display |
| 10 | DF | .~.~ Liquid or deformable surface holography |
| 11 | DF | .~ With memory means |
| 12 | DF | BEAM STABILIZATION OR COMPENSATION |
| 13 | DF | TESTING, MONITORING, OR CALIBRATING |
| 14 | DF | SEISMIC PROSPECTING |
| 15 | DF | .~ Offshore prospecting |
| 16 | DF | .~.~ Transducer position control |
| 17 | DF | .~.~.~ Hydromechanical |
| 18 | DF | .~.~.~ Fluid variation |
| 19 | DF | .~.~ Transducer cable location determination |
| 20 | DF | .~.~ Multiple hydrophone cable systems |
| 21 | DF | .~.~ Signal processing |
| 22 | DF | .~.~.~ Transducer output weighting |
| 23 | DF | .~.~.~ Controlled source signalling |
| 24 | DF | .~.~.~ Reverberation removal |
| 25 | DF | .~ Well logging |
| 26 | DF | .~.~ Threshold set system |
| 27 | DF | .~.~ Time interval measurement |
| 28 | DF | .~.~ Amplitude measurement |
| 29 | DF | .~.~.~ Peak amplitude |
| 30 | DF | .~.~.~ Amplitude comparison |
| 31 | DF | .~.~.~ Of noncompressional acoustic wave energy |
| 32 | DF | .~.~.~ Frequency dependent determination |
| 33 | DF | .~.~ Depth recording or control |
| 34 | DF | .~.~ Received signal cycle discrimination |
| 35 | DF | .~.~ Borehole or casing condition |
| 36 | DF | .~ Land-refraction type |
| 37 | DF | .~ Land-reflection type |
| 38 | DF | .~.~ Signal analysis and/or correction |
| 39 | DF | .~.~.~ Random signal correlation |
| 40 | DF | .~.~.~ Received correlation |
| 41 | DF | .~.~.~ Transmitted correlation |
| 42 | DF | .~.~.~ Standard correlation |
| 43 | DF | .~.~.~ Filters |
| 44 | DF | .~.~.~.~ Comb filters |
| 45 | DF | .~.~.~.~ Adaptive filters |
| 46 | DF | .~.~.~.~ Inverse filters |
| 47 | DF | .~.~.~ Amplitude |
| 48 | DF | .~.~.~ Phase |
| 49 | DF | .~.~.~ Frequency |
| 50 | DF | .~.~.~ Timing correction |
| 51 | DF | .~.~.~.~ Dynamic timing correction |
| 52 | DF | .~.~.~.~.~ Normal moveout |
| 53 | DF | .~.~.~.~ For dip |
| 54 | DF | .~.~.~.~ For weathering layer |
| 55 | DF | .~.~.~ Timing mark generation |
| 56 | DF | .~.~.~ Particular source-receiver array |
| 57 | DF | .~.~.~.~ Vertical receiver or source array |
| 58 | DF | .~.~.~ By receiver pattern arrangement |
| 59 | DF | .~.~.~ Compositing system |
| 60 | DF | .~.~.~.~ Special digital system |
| 61 | DF | .~.~.~.~ Beam steering |
| 62 | DF | .~.~.~.~ Array weighting |
| 63 | DF | .~.~.~.~ With preliminary signal processing |
| 64 | DF | .~.~.~ Optical processing |
| 65 | DF | .~.~.~ Gain control |
| 66 | DF | .~.~.~.~ Analog/digital compatible systems |
| 67 | DF | .~.~.~.~ Digital |
| 68 | DF | .~.~ Display systems |
| 69 | DF | .~.~.~ Well logging type |
| 70 | DF | .~.~.~ Color |
| 71 | DF | .~.~.~ CRT |
| 72 | DF | .~.~.~ 3-D |
| 73 | DF | .~.~ Synthetic seismograms and models |
| 74 | DF | .~.~ Format conversion |
| 75 | DF | .~.~ Shear wave |
| 76 | DF | .~.~ Telemetry |
| 77 | DF | .~.~.~ Radio wave |
| 78 | DF | .~.~.~ Multiplex |
| 79 | DF | .~.~.~.~ Time |
| 80 | DF | .~.~.~.~ Frequency |
| 81 | DF | WELLBORE TELEMETERING |
| 82 | DF | .~ Through drill string or casing |
| 83 | DF | .~ Through well fluids |
| 84 | DF | .~.~ Rotary valve control |
| 85 | DF | .~.~ Linear valve control |
| 86 | DF | BOREHOLE TESTING |
| 87 | DF | ECHO SYSTEMS |
| 88 | DF | .~ Side scanning or contour mapping sonar systems |
| 89 | DF | .~ Speed determination |
| 90 | DF | .~.~ By doppler effect |
| 91 | DF | .~.~.~ Vehicle mounted system for determining vehicle speed |
| 92 | DF | .~ Parametric sonar |
| 93 | DF | .~ Presence or movement only detection |
| 94 | DF | .~.~ By doppler effect |
| 95 | DF | .~ Returned signal used for control |
| 96 | DF | .~.~ External device |
| 97 | DF | .~.~ Receiver system |
| 98 | DF | .~.~.~ Automatic gain or threshold control |
| 99 | DF | .~ Distance or direction finding |
| 100 | DF | .~.~ With correlation or matched filtering |
| 101 | DF | .~.~ Frequency modulation |
| 102 | DF | .~.~.~ Linear modulation (e.g., sawtooth) |
| 103 | DF | .~.~ With beam steering, scanning, or focussing |
| 104 | DF | .~.~.~ By transducer movement |
| 105 | DF | .~.~.~ Transducer switching or gating |
| 106 | DF | .~.~ With towing |
| 107 | DF | .~.~ With indicator |
| 108 | DF | .~.~.~ Digital readout |
| 109 | DF | .~.~.~ Rotating lamp |
| 110 | DF | .~.~.~ Color display |
| 111 | DF | .~.~.~ Luminous array |
| 112 | DF | .~.~.~ Alarm |
| 113 | DF | .~.~.~ Cathode-ray tube |
| 114 | DF | .~.~.~ Meter |
| 115 | DF | .~.~.~ Permanent record |
| 116 | DF | .~.~.~ Audible or tactile |
| 117 | DF | PLURAL TRANSMITTERS TO RECEIVER OR TRANSMITTER TO PLURAL RECEIVERS |
| 197 | DF | SELECTIVE (E.G., REMOTE CONTROL) |
| 198 | DF | .~ Humanly generated sound or speech responsive (e.g., human whistle) |
| 199 | DF | .~ Frequency responsive actuation |
| 118 | DF | DISTANCE OR DIRECTION FINDING |
| 119 | DF | .~ With beam steering, scanning, or focussing |
| 120 | DF | .~.~ By transducer movement |
| 121 | DF | .~.~ By electrical means |
| 122 | DF | .~.~.~ Transducer switching or gating |
| 123 | DF | .~.~.~ With phase shifter or delay means |
| 124 | DF | .~ By combining or comparing signals |
| 125 | DF | .~.~ Phase comparison and/or correlation |
| 126 | DF | .~.~ Addition or subtraction |
| 127 | DF | .~ With time interval measuring means |
| 128 | DF | .~ With electromagnetic wave |
| 129 | DF | .~ With plurality of transducers |
| 130 | DF | .~ With towing |
| 131 | DF | UNDERWATER SYSTEM |
| 132 | DF | .~ Analog speech communication |
| 133 | DF | .~ Remote control |
| 134 | DF | .~ Telemetering |
| 135 | DF | RECEIVER CIRCUITRY |
| 136 | DF | .~ Responsive to intruder energy |
| 137 | DF | TRANSMITTER SYSTEMS |
| 138 | DF | .~ With beam forming, shaping, steering, or scanning |
| 139 | DF | .~ Animal control |
| 140 | DF | SIGNAL TRANSDUCERS |
| 141 | DF | .~ Underwater type |
| 142 | DF | .~.~ Exclusive-type transmitter |
| 143 | DF | .~.~.~ Hydraulically driven vibrator |
| 144 | DF | .~.~.~ Air guns |
| 145 | DF | .~.~.~ Explosives |
| 146 | DF | .~.~.~ Implosion devices |
| 147 | DF | .~.~.~ Spark discharge devices |
| 148 | DF | .~.~.~ Electrically driven underwater bells or sirens |
| 149 | DF | .~.~ Exclusive-type receiver |
| 150 | DF | .~.~ With modifying lens |
| 151 | DF | .~.~ With reflector |
| 152 | DF | .~.~ With impedance matching means |
| 153 | DF | .~.~ Plural transducer array |
| 154 | DF | .~.~.~ Line array |
| 155 | DF | .~.~.~ Piezoelectric |
| 156 | DF | .~.~.~ Magnetostrictive |
| 157 | DF | .~.~ Piezoelectric |
| 158 | DF | .~.~.~ Head and tail mass |
| 159 | DF | .~.~.~ Elongated cylindrical element |
| 160 | DF | .~.~.~ Bending type |
| 161 | DF | .~.~.~.~ Multimorph |
| 162 | DF | .~.~.~ With resonant or damping structure |
| 163 | DF | .~.~.~ With diaphragm |
| 164 | DF | .~.~.~ Single element having a plurality of electrodes |
| 165 | DF | .~.~.~ Specific support structure |
| 166 | DF | .~.~.~ Liquid filled |
| 167 | DF | .~.~.~ Pressure compensating means |
| 168 | DF | .~.~ Magnetostrictive |
| 169 | DF | .~.~ Elongated continuous type |
| 170 | DF | .~.~ Electret |
| 171 | DF | .~.~ Liquid filled transducer |
| 172 | DF | .~.~ Transducer with pressure compensating means |
| 173 | DF | .~.~ Transducer with support |
| 174 | DF | .~.~ Transducer with diaphragm |
| 175 | DF | .~.~.~ Diaphragm with electric driving coil |
| 176 | DF | .~.~ Transducer with resonant or damping structure |
| 177 | DF | .~ Towed land cables |
| 178 | DF | .~ Receivers |
| 179 | DF | .~.~ Pendulum type |
| 180 | DF | .~.~ Piezoelectric |
| 181 | DF | .~.~ Capacitive |
| 182 | DF | .~.~ Moving coil |
| 183 | DF | .~.~.~ Spider spring |
| 184 | DF | .~.~.~ Having arcuate movement |
| 185 | DF | .~.~ Moving magnet |
| 186 | DF | .~.~.~ Having arcuate movement |
| 187 | DF | .~.~.~ Spider spring |
| 188 | DF | .~.~ Casing or housing |
| 189 | DF | .~ Vibrator-type transmitter |
| 190 | DF | .~.~ With feedback control |
| 191 | DF | MISCELLANEOUS |
| ****************************** | ||
| CROSS-REFERENCE ART COLLECTIONS | ||
| ****************************** | ||
| 900 | DF | SONAR TIME VARIED GAIN CONTROL SYSTEMS |
| 901 | DF | NOISE OR UNWANTED SIGNAL REDUCTION IN NONSEISMIC RECEIVING SYSTEM |
| 902 | DF | SPEED OF SOUND COMPENSATION |
| 903 | DF | TRANSMIT-RECEIVE CIRCUITRY |
| 904 | DF | DOPPLER COMPENSATION SYSTEMS |
| 905 | DF | SIDE LOBE REDUCTION OR SHADING |
| 906 | DF | AIRBORNE SHOCK-WAVE DETECTION |
| 907 | DF | COORDINATE DETERMINATION |
| 908 | DF | MATERIAL LEVEL DETECTION, E.G., LIQUID LEVEL |
| 909 | DF | COLLISION AVOIDANCE |
| 910 | DF | PORTABLE SONAR DEVICES |
| 911 | DF | PARTICULAR WELL-LOGGING APPARATUS |
| 912 | DF | .~ Particular transducer |