Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824501 | Method of manufacturing radial tire | Hisao Ushikubo, Toru Tsuda | 1989-04-25 |
| 4798769 | Electrode supporting conduit tube for electrical heating of underground hydrocarbon resources | Osamu Hayashi, Sadamu Matsuda, Goro Okamoto, Kazuo Okahashi | 1989-01-17 |