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Class Information
Number: 333/141
Name: Wave transmission lines and networks > Coupling networks > Delay lines including elastic bulk wave propagation means
Description: Subject matter for retarding wave energy a predetermined time over a range of frequencies and systems within the class definition which include such networks wherein structure is provided for converting electrical wave energy to bulk wave mechanical energy, and for transmitting the bulk wave mechanical energy for reconversion to electrical wave energy.

Sub-classes under this class:

Class Number Class Name Patents
333/146 Helical propagation path 7
333/148 Including magnetostrictive transducers 64
333/142 Multipath propagation 31
333/145 Nonuniform propagation path 17
333/147 Propagation path has significant chemical or physical properties 46
333/149 Significant transducer structure 45
333/144 Variable delay 20

Patents under this class:
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Patent Number Title Of Patent Date Issued
8416037 Phase shifter using bulk acoustic wave resonator Apr. 9, 2013
7581306 Method for producing a boundary acoustic wave device Sep. 1, 2009
7515019 Non-contact position sensor with sonic waveguide Apr. 7, 2009
7322093 Method for producing a boundary acoustic wave device Jan. 29, 2008
7134319 Acoustic wave sensor with reduced condensation and recovery time Nov. 14, 2006
6885491 Diffraction-optical component, illumination system and exposure system comprising such a diffraction-optical component as well as an exposure method employing such an exposure system Apr. 26, 2005
6248422 Shadow sculpted thin films Jun. 19, 2001
6121856 Bulk acoustic wave device with lamb wave mode selection Sep. 19, 2000
6046656 Elastic boundary wave device and method of its manufacture Apr. 4, 2000
5606297 Conical ultrasound waveguide Feb. 25, 1997
5465393 Simulated air interface system for simulating radio communication Nov. 7, 1995
5378947 Filter circuit composed of glass delay line with no coil Jan. 3, 1995
5294861 Ultrasonic probe Mar. 15, 1994
5163435 Piezoceramic lamina acoustic delay line suitable for use in an ultrasonic diagnostic system Nov. 17, 1992
5130679 Ultrasonic delay line mounted in a frame-like body having a wiring pattern thereon Jul. 14, 1992
4951380 Waveguide structures and methods of manufacture for traveling wave tubes Aug. 28, 1990
4818959 Phase equalizer Apr. 4, 1989
4743870 Longitudinal mode fiber acoustic waveguide with solid core and solid cladding May. 10, 1988
4742318 Birefringent single-mode acoustic fiber May. 3, 1988
4734662 Comb filter Mar. 29, 1988
4723468 Electronic stringed instrument Feb. 9, 1988
4691178 Ultrasonic delay line Sep. 1, 1987
4614923 Method of suppressing magnetostatic waves in magnetic garnet films for microwave circuit applications Sep. 30, 1986
4609890 Bulk acoustic wave signal processing devices Sep. 2, 1986
4554519 Magnetostatic wave delay line Nov. 19, 1985
4516090 Ultrasonic delay line May. 7, 1985
4494031 High power acoustic wave arrangement with N.sup.2 parallel-series connected acoustic wave devices Jan. 15, 1985
4469977 Superlattice ultrasonic wave generator Sep. 4, 1984
4467295 Solid ultrasonic delay line Aug. 21, 1984
4452084 Inherent delay line ultrasonic transducer and systems Jun. 5, 1984
4447754 Broad band surface acoustic wave edge deposited transducer May. 8, 1984
4400669 Magnetostatic wave delay line having improved group delay linearity Aug. 23, 1983
4392115 Volume magnetostatic wave device Jul. 5, 1983
4349794 Shallow bulk acoustic wave devices Sep. 14, 1982
4328472 Acoustic guided wave devices May. 4, 1982
4316161 Wideband low triple transit delay line Feb. 16, 1982
4314214 Magnetostatic-wave device comprising a conducting strip exchange structure Feb. 2, 1982
4301431 Miniature delay line having low direct coupling Nov. 17, 1981
4292608 Electroacoustic delay line apparatus Sep. 29, 1981
4290033 Shallow bulk acoustic wave devices employing energy trapping Sep. 15, 1981
4264882 Electric signal transmission device employing a ferromagnetic amorphous ribbon Apr. 28, 1981
4248120 Stringed musical instrument with electrical feedback Feb. 3, 1981
4242653 Triple transit suppression for bulk acoustic delay lines Dec. 30, 1980
4196406 Ultrasonic control device Apr. 1, 1980
4193049 Ultrasonic touch control panel Mar. 11, 1980
4160962 Dual section distributed parameter delay-line Jul. 10, 1979
4159418 Delay line encoder-decoder Jun. 26, 1979
4123731 Glass for use in ultrasonic delay lines Oct. 31, 1978
4096477 Identification system using coded passive transponders Jun. 20, 1978
4084191 Acousto-optical scanner Apr. 11, 1978

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