Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6652999 | Magnetic recording medium and signal recording system comprising at least two magnetic layers with orthogonally oriented axes | Kiyomi Ejiri, Minoru Sueki | 2003-11-25 |
| 5715313 | Magnetic recording/reproducing method | Fumiaki Tsukuda, Yasushi Endo | 1998-02-03 |
| 5518804 | Magnetic recording medium | Chiaki Mizuno, Masaya Kojima | 1996-05-21 |
| 5494621 | Method for producing shutter for disc cartridge | Kazutoshi Machida, Ikuo Taki, Naoyoshi Chino, Tadashi Irie | 1996-02-27 |
| 5305172 | Synthetic resin disc cartridge shutter having non-engaging raised gate mark | Kazutoshi Machida, Ikuo Taki, Naoyoshi Chino, Tadashi Irie | 1994-04-19 |
| 4995199 | Magnetic tape cassette having improved guide pole structure | Takahito Miyoshi, Minoru Kanazawa, Takuzi Yamada, Yasutoshi Okuzawa | 1991-02-26 |
| 4993197 | Magnetic tape cassette having improved guide pole structure | Takahito Miyoshi, Minoru Kanazawa, Takuzi Yamada, Yasutoshi Okuzawa | 1991-02-19 |
| 4930032 | Magnetic tape cassette having improved guide pole structure | Takahito Miyoshi, Minoru Kanazawa, Takuzi Yamada, Yasutoshi Okuzawa | 1990-05-29 |
| 4465737 | Magnetic recording medium | Hajime Miyatuka, Akira Kasuga, Akihiro Matsufuji | 1984-08-14 |