Rion Kabushiki Kaisha

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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 2105
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 1153

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D497000 Hearing aidOct 03, 03Oct 05, 04[2404]
D497001 Hearing aidOct 03, 03Oct 05, 04[2404]
6041128 Battery receiving chamber and hearing aidJan 30, 95Mar 21, 00[H04R]
5187746 Structure of battery receiving chamberNov 22, 91Feb 16, 93[H01M, H04R]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D375556 Hearing aidExpiredJun 27, 94Nov 12, 96[]
D368309 Earplug for a hearing aidExpiredAug 01, 94Mar 26, 96[]
5396801 VibrometerExpiredNov 09, 93Mar 14, 95[G01M]
5387875 Output circuit capable of driving a vibration deviceExpiredJan 21, 94Feb 07, 95[H03F]
D354568 Hearing aidExpiredFeb 09, 94Jan 17, 95[]
5347584 Hearing aidExpiredMar 06, 92Sep 13, 94[H04R]
5010575 Audio current pick-up deviceExpiredMay 17, 89Apr 23, 91[H04M, H04R]
4739511 Hearing aidExpiredJan 22, 86Apr 19, 88[H04R]
4519399 Method for measuring the degree of nasalityExpiredDec 02, 83May 28, 85[A61B]
4490585 Hearing aidExpiredOct 08, 82Dec 25, 84[H04R]
4489330 Electromagnetic induction coil antennaExpiredSep 22, 82Dec 18, 84[H04R, H01Q]
4475230 Hearing aidExpiredJul 29, 82Oct 02, 84[H03G]
4456795 Behind-the-ear type hearing aidExpiredJan 27, 82Jun 26, 84[H04R]
4361733 Hard-of-hearing aid applianceExpiredJul 28, 80Nov 30, 82[H04B]
4354061 Sensing coil in hearing aidExpiredDec 01, 80Oct 12, 82[H04B, H04R]

Top Inventors for This Owner

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