Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 181/175
Name: Acoustics > Sound-modifying means
Description: Subject matter for (1) deviation of the direction of an acoustical wave, (2) blocking of an acoustical wave, or (3) the modification of the character or property of an acoustical wave.










Sub-classes under this class:

Class Number Class Name Patents
181/206 By wave interference 157
181/211 Combined 81
181/198 Housing or enclosure (e.g., sound confining and absorbing) 168
181/177 Intensifying horn 49
181/176 Lens 63
181/207 Mechanical vibration attenuator 254
181/296 Methods 158
181/212 Muffler, fluid conducting type 173
181/210 Sound absorbing fence or screen (e.g., jet engine or vehicle noise) 217
181/284 Sound absorbing panels 285
181/295 Space absorbers 140
181/196 Within tubular means 52


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8678130 Audio apparatus Mar. 25, 2014
8636101 Device for damping and scattering hydrosound in a liquid Jan. 28, 2014
8616327 Portable media player sound deflecting assembly Dec. 31, 2013
8616328 Method and apparatus for wave generation and detection using tensegrity structures Dec. 31, 2013
8541496 Energy absorbing composition and impact and sound absorbing applications thereof Sep. 24, 2013
8522917 Cell phone sound amplifying extend cup Sep. 3, 2013
8511423 Acoustic diode Aug. 20, 2013
8434586 Sound insulation in a refrigerant circuit May. 7, 2013
8401216 Acoustic traveling wave tube system and method for forming and propagating acoustic waves Mar. 19, 2013
8360201 Sound absorbing structure and sound chamber Jan. 29, 2013
8327974 Sound enhancing apparatus Dec. 11, 2012
8292436 Projection screen and image projection system using the same Oct. 23, 2012
8290195 Acoustic radiation pattern adjusting Oct. 16, 2012
8272517 Water-proof sound-transmitting membrane, method for producing the water-proof sound-transmitting membrane, and electrical appliance including the water-proof sound-transmitting membrane Sep. 25, 2012
8186478 Multi-functional dual filtered hearing protector May. 29, 2012
8177022 Transmitted sound control apparatus May. 15, 2012
8162098 Tunable acoustic reflector Apr. 24, 2012
8162099 Vehicle interior structure Apr. 24, 2012
8157048 Splash proof acoustically resistive color assembly Apr. 17, 2012
8141678 Sound-permeable film, electronic component with sound-permeable film, and method of producing circuit board having electronic component mounted thereon Mar. 27, 2012
8130994 Waveguide Mar. 6, 2012
7912234 Acoustic projector for propagating a low dispersion sound field Mar. 22, 2011
7908924 Sound focusing mechanism and method of estimating acoustic leakage of an object and method of estimating transmission loss of an object Mar. 22, 2011
7840021 Method and apparatus for a weather proof notification device Nov. 23, 2010
7775320 Method for reducing noise in a vehicle cabin Aug. 17, 2010
7610810 Methods for producing acoustic sources Nov. 3, 2009
7601763 Diaphragm for speaker and manufacturing method thereof Oct. 13, 2009
7484589 Apparatus and method for reducing aircraft noise and acoustic fatigue Feb. 3, 2009
7331950 Apparatus for containing noise generated by a pneumatically powered surgical instrument and related method Feb. 19, 2008
7241258 Passive vibration isolation of implanted microphone Jul. 10, 2007
7214179 Low acceleration sensitivity microphone May. 8, 2007
7204342 Sound focus speaker of gas-filled sound lens attachment type Apr. 17, 2007
7167415 Transducers for focusing sonic energy in transmitting and receiving device Jan. 23, 2007
7156201 Ultrasonic rod waveguide-radiator Jan. 2, 2007
6986348 Cough-a-lizer Jan. 17, 2006
6834744 Speaker system Dec. 28, 2004
6830876 Acoustic resistor for hearing improvement and audiometric applications, and method of making same Dec. 14, 2004
6805219 Engine cover Oct. 19, 2004
6799657 Absorptive/reactive muffler for variable speed compressors Oct. 5, 2004
6684977 Speaker retention assembly for an active noise control system Feb. 3, 2004
6619425 Soundproof cover Sep. 16, 2003
6561312 Device for in particular acoustically uncoupled mounting May. 13, 2003
6533063 Video equipment speaker device with acoustic lens Mar. 18, 2003
6527080 Passive system for speech enhancement Mar. 4, 2003
6519348 Speaker apparatus and television set Feb. 11, 2003
6478109 Laminated composite panel-form loudspeaker Nov. 12, 2002
6435301 Apparatus for the redistriabution of acoustic energy Aug. 20, 2002
6290140 Energy management system and method Sep. 18, 2001
6216817 Damping structural substance and a damping coat forming method Apr. 17, 2001
6122386 Adjustable speaker system with reflector Sep. 19, 2000

1 2 3 4










 
 
  Recently Added Patents
Package for a medicinal product
Information processing apparatus capable of authentication processing with improved user convenience, control program for information processing apparatus, and recording medium having control
Method for forming contact in an integrated circuit
Catalysts for polyurethane coating compounds
Filler containing composition and process for production and use thereof
Prioritizing application data for transmission in a wireless user device
Vehicle running control system
  Randomly Featured Patents
Real time encoder with time and bit rate constraint, method, computer program product and corresponding storage means
Filling fissures in metal articles
Swag support
Thrombus removal system and process
Image reading apparatus and circuit board unit used therefor
Method to drill and tap a hollow underwater member
Cathode structure for magnetron
Wire guides and anchors for endoscopy
Aspirating foamer
Microscope slide marking apparatus and method