Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4535119 | Rubber composition for coating tire cord | Koji Ishiguchi, Shinji Yamamoto | 1985-08-13 |
| 4532291 | Bead filler rubber composition | Junnosuke Hayashi, Shinji Yamamoto | 1985-07-30 |