Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885273 | Method of producing a superconducting wire using alloy preform | Osamu Kohno, Yoshimitsu Ikeno, Nobuyuki Sadakata, Shin'ya Aoki, Mikio Nakagawa | 1989-12-05 |
| 4811490 | Method and device for measuring clearances between gears | Hiroshi Ueda | 1989-03-14 |
| 4801499 | Optical recording medium | Akira Aoyama, Shigeru Kogure | 1989-01-31 |