Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864449 | Cassette for tape recording and/or reproducing apparatus accommodating cassettes of different sizes | Takahide Ohtani | 1989-09-05 |
| 4820565 | Magnetic recording medium | Masaya Funahashi, Teruhisa Miyata, Akira Miyake | 1989-04-11 |
| 4797321 | Magnetic recording medium | Masaya Funahashi, Teruhisa Miyata, Akira Miyake, Kohji Norimatsu | 1989-01-10 |