Shinwa Kabushiki Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 4134

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5528439 Tape player head with a wear-preventing cam arrangementOct 17, 94Jun 18, 96[G11B]
5347409 Device maintaining fast forward/rewind/play relationship during change of selected play direction of reversing tape playerMay 07, 93Sep 13, 94[G11B]
5308016 Tape transport with differential torque between takeup and feed reelsMay 27, 92May 03, 94[G11B]
5291362 A retractable bi-directional tape head mechanismJul 01, 92Mar 01, 94[G11B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7360226 Disk playerExpiredJan 24, 03Apr 15, 08[G11B]
6941564 Disk insertion, biasing and alignment apparatusExpiredFeb 27, 03Sep 06, 05[0000]
6373810 Disk driving apparatusExpiredMar 08, 01Apr 16, 02[G11B]
6226253 Disk driving apparatusExpiredApr 14, 99May 01, 01[G11B]
6204993 Reel drive mechanism for a cassette tape playerExpiredAug 27, 98Mar 20, 01[G11B]
5761185 Apparatus for reading and writing read/write disksExpiredFeb 25, 97Jun 02, 98[G11B]
5682364 Magazine for read/write disks and method and device for reading and writing said disksExpiredOct 23, 95Oct 28, 97[G11B]
5570852 Gear mechanism and tape player using gear mechanismExpiredFeb 28, 94Nov 05, 96[G11B]
5561657 Magazine for read/write disks and method and device for reading and writing of said read/write disksExpiredDec 07, 94Oct 01, 96[G11B]
4843499 Tape winding direction switch device of cassette tape recorderExpiredSep 23, 87Jun 27, 89[G11B]
4811145 Head device of tape playerExpiredSep 23, 87Mar 07, 89[G11B]
4788607 Tape winding end detecting device of tape recorderExpiredSep 23, 87Nov 29, 88[G11B]
D292067 CartonExpiredJun 14, 84Sep 29, 87[]
4334655 Automatic tape feeding direction reversing device in a tape recorderExpiredMar 31, 80Jun 15, 82[B65H, G03B, G11B]
4283027 Tape feeder in a tape recorderExpiredMar 31, 80Aug 11, 81[G03B, G11B]

Top Inventors for This Owner

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