Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889480 | Slide core mold and injection molding | Koichi Yokoi | 1989-12-26 |
| 4872377 | Transmission ratio control system for a continuously variable transmission | — | 1989-10-10 |
| 4850936 | Transmission ratio control system for a continuously variable transmission | — | 1989-07-25 |
| 4837198 | Heat-sensitive recording medium | Katsumi Kuriyama, Kazuyuki Hanada, Iwao Misaizu, Masashi Kashimura, Tomoko Goto | 1989-06-06 |