Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6690624 | Magnetic lens, magnetic reproducing element, reproducing apparatus and reproducing method | Katsusuke Shimazaki | 2004-02-10 |
| 6671233 | Magneto-optical recording medium and reproduction method therefor | Katsusuke Shimazaki, Norio Ohta, Hitoshi Watanabe, Hiroki Takao | 2003-12-30 |
| 6501729 | Cartridge for information-recording media having deformable elastic pressing member urged by projection on shutter | Hitoshi Watanabe, Katsusuke Shimazaki, Satoru Ohnuki, Norio Ohta | 2002-12-31 |
| 6438073 | Magnetic lens, magnetic reproducing element, reproducing apparatus and reproducing method | Katsusuke Shimazaki | 2002-08-20 |
| 6339583 | Cartridge for information-recording media having deformable elastic member on shutter | Hitoshi Watanabe, Katsusuke Shimazaki, Satoru Ohnuki, Norio Ohta | 2002-01-15 |
| 6122228 | Magneto-optical recording medium and reproduction method therefor | Katsusuke Shimazaki, Norio Ohta, Hitoshi Watanabe, Hiroki Takao | 2000-09-19 |
| 5537389 | Disk cartridge having a single closing energizer for closing two independently opened shutters | Tadahiro Kuwa, Makoto Miura, Tamotsu Iida, Yoshitake Kato, Masanori Uematsu +3 more | 1996-07-16 |
| 5495467 | Disc cartridge having an opening/closing slider mechanism | Yoshito Tanaka, Toshinori Sugiyama | 1996-02-27 |
| 5273598 | Optical disc manufacturing method | Toshio Higasihara, Ken Yoshizawa, Masahiro Suzuki, Akira Gotoh | 1993-12-28 |
| 5199988 | Manufacturing apparatus and method for recording medium | Hisamitsu Kamezaki, Osamu Saito | 1993-04-06 |
| 5166844 | Disc drive apparatus having a mechanism for opening/closing the shutter of a disc cartridge | Yoshito Tanaka, Toshinori Sugiyama | 1992-11-24 |