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Class Information
Number: 181/173
Name: Acoustics > Diaphragm > Particular shape
Description: Subject matter characterized by the form or configuration of the diaphragm.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7332215 |
Resin-molded component and method for manufacturing thereof as well as diaphragm for loudspeaker |
Feb. 19, 2008 |
| 7306073 |
Electroacoustic transducer comprising a membrane with a middle area comprising stiffening grooves |
Dec. 11, 2007 |
| 7275620 |
Square speaker |
Oct. 2, 2007 |
| 7174990 |
Tangential stress reduction system in a loudspeaker suspension |
Feb. 13, 2007 |
| 6957714 |
Speaker and speaker diaphragm |
Oct. 25, 2005 |
| 6931140 |
Electro-acoustic transducer with two diaphragms |
Aug. 16, 2005 |
| 6929091 |
Planar diaphragm loudspeaker and related methods |
Aug. 16, 2005 |
| 6920957 |
Loudspeaker diaphragm |
Jul. 26, 2005 |
| 6889796 |
Loudspeaker suspension |
May. 10, 2005 |
| 6888946 |
High frequency loudspeaker |
May. 3, 2005 |
| 6863153 |
Loudspeaker diaphragm |
Mar. 8, 2005 |
| 6862361 |
Audio speaker |
Mar. 1, 2005 |
| 6851513 |
Tangential stress reduction system in a loudspeaker suspension |
Feb. 8, 2005 |
| 6839445 |
Piezoelectric speaker |
Jan. 4, 2005 |
| 6785397 |
Electro-acoustic converter |
Aug. 31, 2004 |
| 6779627 |
Flat panel sound radiator with fire protective back box |
Aug. 24, 2004 |
| 6672423 |
Speaker and method of assembling the speaker |
Jan. 6, 2004 |
| 6655495 |
Loudspeaker damper and loudspeaker |
Dec. 2, 2003 |
| 6644182 |
Method of producing cone diaphragm having color patterns |
Nov. 11, 2003 |
| 6626263 |
Passive speaker system |
Sep. 30, 2003 |
| 6622817 |
Sound reproduction device working according to the bending wave principle |
Sep. 23, 2003 |
| 6612399 |
Lightweight low frequency loudspeaker for active noise control |
Sep. 2, 2003 |
| 6590993 |
Panel-shaped loudspeaker |
Jul. 8, 2003 |
| 6554098 |
Panel speaker with wide free space |
Apr. 29, 2003 |
| 6516077 |
Electroacoustic transducer |
Feb. 4, 2003 |
| 6513623 |
Speaker |
Feb. 4, 2003 |
| 6510919 |
Facing system for a flat panel radiator |
Jan. 28, 2003 |
| 6494289 |
Device for dynamic excitation of panel loudspeakers |
Dec. 17, 2002 |
| 6427016 |
Acoustic devices |
Jul. 30, 2002 |
| 6411723 |
Loudspeakers |
Jun. 25, 2002 |
| 6386315 |
Flat panel sound radiator and assembly system |
May. 14, 2002 |
| 6298140 |
Electroacoustic transducer with improved tonal quality |
Oct. 2, 2001 |
| 6285773 |
Linear loudspeaker |
Sep. 4, 2001 |
| 6247551 |
Panel-form loudspeaker |
Jun. 19, 2001 |
| 6237716 |
Standard-sized vibrating diaphragm speaker structure |
May. 29, 2001 |
| 6199655 |
Holographic transparent speaker |
Mar. 13, 2001 |
| 6176345 |
Pistonic motion, large excursion passive radiator |
Jan. 23, 2001 |
| 6178252 |
Electroacoustic transducer comprising a diaphragm having through portions for mounting a voice coil |
Jan. 23, 2001 |
| 6170603 |
Acoustic wall |
Jan. 9, 2001 |
| 6044925 |
Passive speaker |
Apr. 4, 2000 |
| 6039146 |
Method of manufacturing speaker diaphragm |
Mar. 21, 2000 |
| 6026929 |
High frequency radially arcuated center speaker cone with variable thickness |
Feb. 22, 2000 |
| 5907133 |
Device for electroacoostic diffusion, with diaphragms, spiders and horns of balsa wood or mixtures thereof |
May. 25, 1999 |
| 5880412 |
High frequency radially arcuated center speaker cone |
Mar. 9, 1999 |
| 5847332 |
Polycarbonate-based radially arcuated speaker cone |
Dec. 8, 1998 |
| 5740264 |
Miniature electroacoustic transducer |
Apr. 14, 1998 |
| 5714722 |
Loudspeaker |
Feb. 3, 1998 |
| 5693917 |
Planar diaphragm loudspeaker |
Dec. 2, 1997 |
| 5615275 |
Planar diaphragm loudspeaker with counteractive weights |
Mar. 25, 1997 |
| 5425002 |
Acoustic pressure pulse generator |
Jun. 13, 1995 |
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