Issued Patents All Time
Showing 126–133 of 133 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4291800 | Tape cassette | Masatoshi Okamura | 1981-09-29 |
| 4254917 | Reel for tape cassette | Masatoshi Okamura | 1981-03-10 |
| 4254923 | Magnetic tape cassette | Toshihiko Ishida, Yukio Nakazawa, Kimio Tanaka | 1981-03-10 |
| 4227622 | Tape cassette | Masatoshi Okamura, Kimio Tanaka | 1980-10-14 |
| 4212437 | Tape cassette | Masatoshi Okamura | 1980-07-15 |
| 4195797 | Tape cassette | Masatoshi Okamura | 1980-04-01 |
| 4187998 | Tape cassette | Masatoshi Okamura | 1980-02-12 |
| 4181272 | Tape cassette reel | Masatoshi Okamura | 1980-01-01 |