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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 6095281 |
Low noise air conditioner housing |
Aug. 1, 2000 |
| 6068080 |
Apparatus for the redistribution of acoustic energy |
May. 30, 2000 |
| 6059069 |
Loudspeaker waveguide design |
May. 9, 2000 |
| 6035962 |
Easily-combinable and movable speaker case |
Mar. 14, 2000 |
| 5910648 |
Sound generator |
Jun. 8, 1999 |
| 5850060 |
Acoustic lens device |
Dec. 15, 1998 |
| 5828012 |
Protective cover assembly having enhanced acoustical characteristics |
Oct. 27, 1998 |
| 5793001 |
Synchronized multiple transducer system |
Aug. 11, 1998 |
| 5642445 |
System for determining an interior or exterior acoustic noise level of an enclosed structure and noise reduction device incorporating such system |
Jun. 24, 1997 |
| 5623133 |
Speaker grille and molding method therefor |
Apr. 22, 1997 |
| 5616892 |
Virtual imaging multiple transducer system |
Apr. 1, 1997 |
| 5350887 |
Method and apparatus for the generation of low frequency sound |
Sep. 27, 1994 |
| 5285024 |
Microphone |
Feb. 8, 1994 |
| 5185728 |
Omnidirectional ultrasonic transducer |
Feb. 9, 1993 |
| 5146434 |
Sound focusing device |
Sep. 8, 1992 |
| 5131052 |
Mid-range loudspeaker assembly propagating forward and backward sound waves in phase |
Jul. 14, 1992 |
| 5111904 |
Molded article having elastomeric mold member used therewith |
May. 12, 1992 |
| 5056069 |
Ultrasonic sensor |
Oct. 8, 1991 |
| 5010739 |
Air conditioning apparatus having audible sound level control function |
Apr. 30, 1991 |
| 4993511 |
Speaker |
Feb. 19, 1991 |
| 4995012 |
Method of generating an elastic wave |
Feb. 19, 1991 |
| 4974698 |
Speaker cover grille installation |
Dec. 4, 1990 |
| 4967872 |
Loud speaker system |
Nov. 6, 1990 |
| 4969196 |
Speaker and horn array |
Nov. 6, 1990 |
| 4967874 |
Microphone baffle apparatus |
Nov. 6, 1990 |
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