Issued Patents All Time
Showing 25 most recent of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7379479 | Communication apparatus, communication method and program | Yoichi Matsumura, Katsumi Tahara, Hiroaki Seto, Eisaburo Itakura | 2008-05-27 |
| 6704174 | Magnetic recording and playback device with ESD protection | Yutaka Soda, Nobuyuki Nagai, Katsuhiro Kasuga, Tadashi Ozue | 2004-03-09 |
| 6515830 | Protective linear sheets for a magnetic recording disc housed in a disc cartridge | — | 2003-02-04 |
| 6449125 | Disc cartridge | Kazutoshi Yamamoto | 2002-09-10 |
| 6437942 | Disc cartridge with improved shutter slide operation | — | 2002-08-20 |
| 6433963 | Disc cartridge | Kazutoshi Yamamoto | 2002-08-13 |
| 6327117 | Recording/reproducing apertures for disc cartridge | — | 2001-12-04 |
| 6307712 | Assembly for discrimination disc storage capacity in a disc cartridge | Hideaki Kumagai, Yasushi Fujita | 2001-10-23 |
| 6307711 | Disc cartridge | Shintaro Higuchi | 2001-10-23 |
| 6307713 | Center core for disc-shaped recording medium and process of producing same | Kiyoyuki Miyata | 2001-10-23 |
| 6271992 | Disk cartridge | — | 2001-08-07 |
| 6236540 | Assembly for connecting the upper and lower cartridge halves of a disc cartridge | — | 2001-05-22 |
| 6199689 | Cartridge holder | Shintaro Higuchi, Yoshiyuki Abe | 2001-03-13 |
| 6198598 | Disc cartridge with slippery film to reduce friction and vent to discharge dust | — | 2001-03-06 |
| 6175471 | Disc cartridge having configuration to prevent insertion into certain disk drives | — | 2001-01-16 |
| D422997 | Magnetic disc cartridge | Makoto Isozaki, Noriko Katayama, Toru Ichikawa | 2000-04-18 |
| 6031675 | Recording medium device provided with erroneous recording prevention mechanism | Takaaki Sanpei | 2000-02-29 |
| D420991 | Shutter for magnetic disc cartridge | Toru Ichikawa | 2000-02-22 |
| D420999 | Shutter for magnetic disc cartridge | Toru Ichikawa | 2000-02-22 |
| D420347 | Magnetic disc cartridge with shutter | Toru Ichikawa | 2000-02-08 |
| D419359 | Case for a disc | Minako Eguchi | 2000-01-25 |
| 6018445 | Belt-drive tape cartridge having an offset drive roller and flanged tape guides | Masanori Sato | 2000-01-25 |
| 5710686 | Tape cassette with main body and slider lock formed by dichromatic molding | — | 1998-01-20 |
| 5477557 | Laser drive circuit with independently adjustable maximum and minimum power levels | Naoto Inaba | 1995-12-19 |
| RE34927 | Magnetic tape cassette with tape protective closure and lock mechanism | Yoshinori Yamamoto, Masao Ohyama, Kenichi Horikawa, Shigeru Mizusawa, Kenji Kawakami | 1995-05-02 |