Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4660784 | Tap cartridge | Takashi Sumida, Sigeo Sasaki, Kazuhiro Fujita, Kenji Ogiro | 1987-04-28 |
| 4643304 | Tape cartridge with extending reference surfaces | Takashi Sumida, Shigeo Sasaki | 1987-02-17 |
| 4635879 | Tape cassette | Takashi Sumida, Sigeo Sasaki, Kazuhiro Fujita | 1987-01-13 |
| 4186481 | Method for fabrication of rear chip for hall effect magnetic head | Takaharu Noguchi, Kohji Tamura, Tetsu Oi, Yutaka Miyoshi | 1980-02-05 |