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Class Information
Number: 367
Name: Communications, electrical: acoustic wave systems and devices >
Description: This is the residual class for the communication of information or intelligence in the form of travelling stresses in an elastic medium which are detected or generated by electric signal handling means wherein the electric signal represents the communicated information or intelligence.










Class Number Class Name No. of Patents
367/7

Acoustic image conversion

219
367/8

Acoustic holography

55
367/10

Liquid or deformable surface holography

13
367/9

Seismic display

15
367/11

With memory means

145
367/906

Airborne shock-wave detection

86
367/12

Beam stabilization or compensation

58
367/86

Borehole testing

93
367/909

Collision avoidance

165
367/907

Coordinate determination

99
367/118

Distance or direction finding

213
367/124

By combining or comparing signals

257
367/126

Addition or subtraction

78
367/125

Phase comparison and/or correlation

150
367/119

With beam steering, scanning, or focussing

121
367/121

By electrical means

36
367/122

Transducer switching or gating

53
367/123

With phase shifter or delay means

95
367/120

By transducer movement

42
367/128

With electromagnetic wave

144
367/129

With plurality of transducers

167
367/127

With time interval measuring means

301
367/130

With towing

138
367/904

Doppler compensation systems

55
367/87

Echo systems

234
367/99

Distance or direction finding

500
367/101

Frequency modulation

80
367/102

Linear modulation (e.g., sawtooth)

30
367/103

With beam steering, scanning, or focussing

228
367/104

By transducer movement

85
367/105

Transducer switching or gating

147
367/100

With correlation or matched filtering

131
367/107

With indicator

79
367/112

Alarm

52
367/116

Audible or tactile

67
367/113

Cathode-ray tube

64
367/110

Color display

29
367/108

Digital readout

107
367/111

Luminous array

61
367/114

Meter

10
367/115

Permanent record

49
367/109

Rotating lamp

29
367/106

With towing

131
367/92

Parametric sonar

52
367/93

Presence or movement only detection

272
367/94

By doppler effect

131
367/95

Returned signal used for control

100
367/96

External device

185
367/97

Receiver system

88
367/98

Automatic gain or threshold control

149
367/88

Side scanning or contour mapping sonar systems

230
367/89

Speed determination

108
367/90

By doppler effect

117
367/91

Vehicle mounted system for determining vehicle speed

52
367/908

Material level detection, e.g., liquid level

213
367/191

Miscellaneous

103
367/901

Noise or unwanted signal reduction in nonseismic receiving system

210
367/911

Particular well-logging apparatus

141
367/912

Particular transducer

72
367/117

Plural transmitters to receiver or transmitter to plural receivers

108
367/910

Portable sonar devices

104
367/135

Receiver circuitry

273
367/136

Responsive to intruder energy

127
367/14

Seismic prospecting

130
367/37

Land-reflection type

81
367/68

Display systems

76
367/72

3-d

92
367/70

Color

45
367/71

Crt

29
367/69

Well logging type

68
367/74

Format conversion

51
367/75

Shear wave

237
367/38

Signal analysis and/or correction

396
367/47

Amplitude

119
367/58

By receiver pattern arrangement

61
367/59

Compositing system

93
367/62

Array weighting

26
367/61

Beam steering

27
367/60

Special digital system

34
367/63

With preliminary signal processing

71
367/43

Filters

140
367/45

Adaptive filters

75
367/44

Comb filters

13
367/46

Inverse filters

79
367/49

Frequency

98
367/65

Gain control

41
367/66

Analog/digital compatible systems

15
367/67

Digital

39
367/64

Optical processing

14
367/56

Particular source-receiver array

123
367/57

Vertical receiver or source array

159
367/48

Phase

54
367/39

Random signal correlation

38
367/40

Received correlation

103
367/42

Standard correlation

25
367/50

Timing correction

119
367/51

Dynamic timing correction

59
367/52

Normal moveout

73
367/53

For dip

87
367/54

For weathering layer

32
367/55

Timing mark generation

26
367/41

Transmitted correlation

98
367/73

Synthetic seismograms and models

340
367/76

Telemetry

125
367/78

Multiplex

34
367/80

Frequency

20
367/79

Time

70
367/77

Radio wave

89
367/36

Land-refraction type

38
367/15

Offshore prospecting

275
367/20

Multiple hydrophone cable systems

308
367/21

Signal processing

227
367/23

Controlled source signalling

98
367/24

Reverberation removal

165
367/22

Transducer output weighting

29
367/19

Transducer cable location determination

122
367/16

Transducer position control

145
367/18

Fluid variation

22
367/17

Hydromechanical

57
367/25

Well logging

382
367/28

Amplitude measurement

45
367/30

Amplitude comparison

57
367/32

Frequency dependent determination

98
367/31

Of noncompressional acoustic wave energy

180
367/29

Peak amplitude

31
367/35

Borehole or casing condition

240
367/33

Depth recording or control

58
367/34

Received signal cycle discrimination

42
367/26

Threshold set system

32
367/27

Time interval measurement

121
367/197

Selective (e.g., remote control)

103
367/199

Frequency responsive actuation

67
367/198

Humanly generated sound or speech responsive (e.g., human whistle)

93
367/905

Side lobe reduction or shading

84
367/140

Signal transducers

342
367/178

Receivers

139
367/181

Capacitive

123
367/188

Casing or housing

165
367/182

Moving coil

36
367/184

Having arcuate movement

3
367/183

Spider spring

20
367/185

Moving magnet

33
367/186

Having arcuate movement

2
367/187

Spider spring

15
367/179

Pendulum type

13
367/180

Piezoelectric

63
367/177

Towed land cables

26
367/141

Underwater type

122
367/170

Electret

41
367/169

Elongated continuous type

29
367/149

Exclusive-type receiver

216
367/142

Exclusive-type transmitter

98
367/144

Air guns

160
367/148

Electrically driven underwater bells or sirens

9
367/145

Explosives

37
367/143

Hydraulically driven vibrator

51
367/146

Implosion devices

33
367/147

Spark discharge devices

56
367/171

Liquid filled transducer

84
367/168

Magnetostrictive

55
367/157

Piezoelectric

209
367/160

Bending type

54
367/161

Multimorph

14
367/159

Elongated cylindrical element

102
367/158

Head and tail mass

76
367/166

Liquid filled

62
367/167

Pressure compensating means

50
367/164

Single element having a plurality of electrodes

40
367/165

Specific support structure

176
367/163

With diaphragm

128
367/162

With resonant or damping structure

129
367/153

Plural transducer array

229
367/154

Line array

228
367/156

Magnetostrictive

31
367/155

Piezoelectric

192
367/174

Transducer with diaphragm

135
367/175

Diaphragm with electric driving coil

63
367/172

Transducer with pressure compensating means

73
367/176

Transducer with resonant or damping structure

123
367/173

Transducer with support

217
367/152

With impedance matching means

82
367/150

With modifying lens

75
367/151

With reflector

102
367/189

Vibrator-type transmitter

158
367/190

With feedback control

56
367/1

Sonar counter-measures

129
367/900

Sonar time varied gain control systems

60
367/902

Speed of sound compensation

92
367/13

Testing, monitoring, or calibrating

335
367/903

Transmit-receive circuitry

80
367/137

Transmitter systems

164
367/139

Animal control

156
367/138

With beam forming, shaping, steering, or scanning

206
367/2

Transponders

78
367/3

Sonobuoys and sonobuoy systems

77
367/4

With component activating or deployment means

104
367/5

With plurality of sonobuoys

23
367/6

With plurality of transponders

63
367/131

Underwater system

302
367/132

Analog speech communication

52
367/133

Remote control

67
367/134

Telemetering

198
367/81

Wellbore telemetering

137
367/82

Through drill string or casing

211
367/83

Through well fluids

234
367/85

Linear valve control

81
367/84

Rotary valve control

67
 
 
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