Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6001446 | Magnetic recording medium | Junji Nakada, Makoto Kashiwaya | 1999-12-14 |
| 5869186 | Magnetic recording medium | Kazuyuki Usuki, Toshio Ishida | 1999-02-09 |
| 5707742 | Magnetic recording medium comprising a ferromagnetic metal thin film, protective layer, and an alkylamine perfluoropolyether lubricant | Kazuyuki Usuki, Toshio Ishida | 1998-01-13 |
| 5503943 | Magnetic recording medium | Tadashi Yasunaga, Hiroaki Doushita | 1996-04-02 |
| 5305665 | Speed change control device of automatic transmission | Mitsugi Tazawa | 1994-04-26 |
| 5300343 | Magnetic recording medium in the form of a floppy disc having a magnetic layer with a specified surface feature | Yasushi Endo, Mikihiko Kato | 1994-04-05 |
| 5268227 | Magnetic recording medium comprising a ferromagnetic metallic then film having a top coat of (a) a hydrocarbonsulfuric or hydrocarbonsulfonic acid or salt and (b) a fluorinated polyether | Yasuo Nishikawa, Hiroyuki Iwasaki | 1993-12-07 |
| 5214984 | Pressure control system for automotive automatic power transmission with feature of fluid pressure dependent actuator control | — | 1993-06-01 |
| 5153522 | Solenoid valve failure detecting apparatus | — | 1992-10-06 |
| 5112679 | Magnetic disk | Jun Nakagawa, Toshio Kawamata | 1992-05-12 |
| 5096774 | Magnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified range | Hiroaki Doushita, Kiyomi Ejiri, Hiroyuki Tahara | 1992-03-17 |
| 5093191 | Magnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified range | Hiroaki Doushita, Kiyomi Ejiri, Hiroyuki Tahara | 1992-03-03 |
| 5091249 | Magnetic recording medium lubricant comprising two different fluorinated polyethers each having specified terminal groups | Yasuo Nishikawa | 1992-02-25 |
| 5069933 | Method for making magnetic recording media | Tadashi Yasunaga, Shiro Kaneko | 1991-12-03 |
| 5053289 | Magnetic recording medium | Yasuo Nishikawa, Takashi Yoneyama | 1991-10-01 |
| 4994321 | Perpendicular magnetic recording medium and the method for preparing the same | Makoto Nagao, Fusao Yamanaka, Akira Nahara | 1991-02-19 |
| 4914594 | Detector for detecting selector position of automatic transmission | — | 1990-04-03 |
| 4869797 | Method for preparing a magnetic recording medium | Makoto Nagao, Fusao Yamanaka, Akira Nahara | 1989-09-26 |
| 4840843 | Magnetic recording medium | Makoto Nagao, Akira Nahara, Yasuo Nishikawa, Hiroyuki Iwasaki | 1989-06-20 |
| 4717592 | Vertical magnetization type recording medium and manufacturing method therefor | Makoto Nagao, Fusao Yamanaka, Akira Nahara | 1988-01-05 |