FOSTER ELECTRIC CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 1592
 
  
 
1401 EQUIPMENT FOR THE RECORDING OR REPRODUCTION OF SOUNDS OR PICTURES944
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 292
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 292
 
  
 
1403 COMMUNICATIONS EQUIPMENT, WIRELESS REMOTE CONTROLS AND RADIO AMPLIFIERS268
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
G10K SOUND-PRODUCING DEVICES 134
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106
 
  
 
H04B TRANSMISSION 1209
 
  
 
H04M TELEPHONIC COMMUNICATION 1162

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9564276 Cable switchFeb 24, 15Feb 07, 17[H01H]
D771016 SpeakerJun 16, 15Nov 08, 16[1403]
D771021 SpeakerJun 16, 15Nov 08, 16[1403]
D761233 EarphoneJun 16, 15Jul 12, 16[1401]
D726165 EarphoneApr 24, 14Apr 07, 15[1401]
D718284 EarphoneOct 28, 13Nov 25, 14[1401]
D718285 EarphoneOct 28, 13Nov 25, 14[1401]
D668244 HeadphoneJun 16, 11Oct 02, 12[1401]
8155344 Vehicle speakerDec 23, 08Apr 10, 12[H04B]
8126169 Super magnetostriction speakerApr 27, 06Feb 28, 12[H04R]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0201,406 EARPHONEAbandonedMar 18, 10Aug 09, 12[H04R]
2012/0195,455 HEADPHONEAbandonedJun 02, 10Aug 02, 12[H04R]
7324834 Speaker systemExpiredAug 15, 05Jan 29, 08[H04B]
2007/0053,547 Diaphragm for use in speakers and speaker provided with this diaphragmAbandonedSep 07, 06Mar 08, 07[H04R]
7181041 Flat speaker of full-face drivingExpiredJun 20, 02Feb 20, 07[H04R]
6940991 Damper for loudspeaker and method for manufacturing sameExpiredJan 10, 02Sep 06, 05[0000]
6899794 Speaker device, and method and device for producing the sameExpiredOct 06, 00May 31, 05[D21F]
6771792 Track-shaped loudspeakerExpiredDec 17, 99Aug 03, 04[H04R]
6577743 Electroacoustic transducer and structure for mounting an electroacoustic transducerExpiredApr 10, 01Jun 10, 03[H04R]
6484844 SpeakerExpiredFeb 26, 01Nov 26, 02[H04R]
6371241 Speaker deviceExpiredJan 24, 00Apr 16, 02[G10K, D21H]
6183674 Manufacturing method of diaphragm for use in electroacoustic transducersExpiredApr 22, 99Feb 06, 01[B29C]
5440630 Telephone receiver with electrostatic discharge preventionExpiredFeb 18, 94Aug 08, 95[H04M]
5142587 Intra-concha type electroacoustic transducer for use with audio devices etc.ExpiredJun 14, 90Aug 25, 92[G10K, H04R]
5003609 Whole-surface driven speakerExpiredFeb 10, 89Mar 26, 91[H04R]

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