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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

191
367/8

Acoustic holography

47
367/10

Liquid or deformable surface holography

13
367/9

Seismic display

10
367/11

With memory means

124
367/906

Airborne shock-wave detection

72
367/12

Beam stabilization or compensation

54
367/86

Borehole testing

82
367/909

Collision avoidance

147
367/907

Coordinate determination

95
367/118

Distance or direction finding

145
367/124

By combining or comparing signals

194
367/126

Addition or subtraction

70
367/125

Phase comparison and/or correlation

127
367/119

With beam steering, scanning, or focussing

90
367/121

By electrical means

32
367/122

Transducer switching or gating

52
367/123

With phase shifter or delay means

87
367/120

By transducer movement

39
367/128

With electromagnetic wave

97
367/129

With plurality of transducers

139
367/127

With time interval measuring means

225
367/130

With towing

129
367/904

Doppler compensation systems

39
367/87

Echo systems

186
367/99

Distance or direction finding

410
367/101

Frequency modulation

71
367/102

Linear modulation (e.g., sawtooth)

30
367/103

With beam steering, scanning, or focussing

211
367/104

By transducer movement

80
367/105

Transducer switching or gating

142
367/100

With correlation or matched filtering

112
367/107

With indicator

64
367/112

Alarm

51
367/116

Audible or tactile

58
367/113

Cathode-ray tube

64
367/110

Color display

27
367/108

Digital readout

105
367/111

Luminous array

58
367/114

Meter

10
367/115

Permanent record

49
367/109

Rotating lamp

24
367/106

With towing

125
367/92

Parametric sonar

46
367/93

Presence or movement only detection

236
367/94

By doppler effect

118
367/95

Returned signal used for control

82
367/96

External device

168
367/97

Receiver system

82
367/98

Automatic gain or threshold control

120
367/88

Side scanning or contour mapping sonar systems

193
367/89

Speed determination

85
367/90

By doppler effect

98
367/91

Vehicle mounted system for determining vehicle speed

47
367/908

Material level detection, e.g., liquid level

203
367/191

Miscellaneous

102
367/901

Noise or unwanted signal reduction in nonseismic receiving system

190
367/911

Particular well-logging apparatus

138
367/912

Particular transducer

70
367/117

Plural transmitters to receiver or transmitter to plural receivers

88
367/910

Portable sonar devices

92
367/135

Receiver circuitry

231
367/136

Responsive to intruder energy

106
367/14

Seismic prospecting

89
367/37

Land-reflection type

61
367/68

Display systems

64
367/72

3-d

69
367/70

Color

40
367/71

Crt

28
367/69

Well logging type

56
367/74

Format conversion

49
367/75

Shear wave

218
367/38

Signal analysis and/or correction

257
367/47

Amplitude

102
367/58

By receiver pattern arrangement

50
367/59

Compositing system

88
367/62

Array weighting

24
367/61

Beam steering

21
367/60

Special digital system

33
367/63

With preliminary signal processing

65
367/43

Filters

113
367/45

Adaptive filters

66
367/44

Comb filters

11
367/46

Inverse filters

76
367/49

Frequency

87
367/65

Gain control

35
367/66

Analog/digital compatible systems

15
367/67

Digital

39
367/64

Optical processing

11
367/56

Particular source-receiver array

105
367/57

Vertical receiver or source array

132
367/48

Phase

53
367/39

Random signal correlation

37
367/40

Received correlation

87
367/42

Standard correlation

24
367/50

Timing correction

99
367/51

Dynamic timing correction

47
367/52

Normal moveout

63
367/53

For dip

73
367/54

For weathering layer

29
367/55

Timing mark generation

21
367/41

Transmitted correlation

91
367/73

Synthetic seismograms and models

234
367/76

Telemetry

94
367/78

Multiplex

28
367/80

Frequency

15
367/79

Time

61
367/77

Radio wave

64
367/36

Land-refraction type

35
367/15

Offshore prospecting

188
367/20

Multiple hydrophone cable systems

243
367/21

Signal processing

165
367/23

Controlled source signalling

79
367/24

Reverberation removal

102
367/22

Transducer output weighting

24
367/19

Transducer cable location determination

94
367/16

Transducer position control

98
367/18

Fluid variation

20
367/17

Hydromechanical

45
367/25

Well logging

297
367/28

Amplitude measurement

39
367/30

Amplitude comparison

53
367/32

Frequency dependent determination

66
367/31

Of noncompressional acoustic wave energy

144
367/29

Peak amplitude

27
367/35

Borehole or casing condition

189
367/33

Depth recording or control

54
367/34

Received signal cycle discrimination

37
367/26

Threshold set system

30
367/27

Time interval measurement

106
367/197

Selective (e.g., remote control)

97
367/199

Frequency responsive actuation

57
367/198

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

86
367/905

Side lobe reduction or shading

83
367/140

Signal transducers

287
367/178

Receivers

114
367/181

Capacitive

73
367/188

Casing or housing

136
367/182

Moving coil

28
367/184

Having arcuate movement

2
367/183

Spider spring

13
367/185

Moving magnet

29
367/186

Having arcuate movement

2
367/187

Spider spring

14
367/179

Pendulum type

13
367/180

Piezoelectric

52
367/177

Towed land cables

22
367/141

Underwater type

98
367/170

Electret

34
367/169

Elongated continuous type

28
367/149

Exclusive-type receiver

195
367/142

Exclusive-type transmitter

64
367/144

Air guns

148
367/148

Electrically driven underwater bells or sirens

8
367/145

Explosives

31
367/143

Hydraulically driven vibrator

43
367/146

Implosion devices

32
367/147

Spark discharge devices

53
367/171

Liquid filled transducer

75
367/168

Magnetostrictive

47
367/157

Piezoelectric

189
367/160

Bending type

51
367/161

Multimorph

14
367/159

Elongated cylindrical element

99
367/158

Head and tail mass

74
367/166

Liquid filled

59
367/167

Pressure compensating means

49
367/164

Single element having a plurality of electrodes

37
367/165

Specific support structure

164
367/163

With diaphragm

124
367/162

With resonant or damping structure

121
367/153

Plural transducer array

195
367/154

Line array

210
367/156

Magnetostrictive

27
367/155

Piezoelectric

174
367/174

Transducer with diaphragm

121
367/175

Diaphragm with electric driving coil

60
367/172

Transducer with pressure compensating means

69
367/176

Transducer with resonant or damping structure

110
367/173

Transducer with support

194
367/152

With impedance matching means

74
367/150

With modifying lens

72
367/151

With reflector

95
367/189

Vibrator-type transmitter

122
367/190

With feedback control

45
367/1

Sonar counter-measures

126
367/900

Sonar time varied gain control systems

59
367/902

Speed of sound compensation

85
367/13

Testing, monitoring, or calibrating

293
367/903

Transmit-receive circuitry

78
367/137

Transmitter systems

144
367/139

Animal control

143
367/138

With beam forming, shaping, steering, or scanning

158
367/2

Transponders

69
367/3

Sonobuoys and sonobuoy systems

70
367/4

With component activating or deployment means

96
367/5

With plurality of sonobuoys

18
367/6

With plurality of transponders

59
367/131

Underwater system

226
367/132

Analog speech communication

44
367/133

Remote control

59
367/134

Telemetering

157
367/81

Wellbore telemetering

110
367/82

Through drill string or casing

162
367/83

Through well fluids

197
367/85

Linear valve control

73
367/84

Rotary valve control

54
 
 
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