Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846238 | Heavy duty pneumatic radial tire with a carcass ply composed of aromatic polyamide fiber cords | Hidenori Masuda | 1989-07-11 |
| 4807681 | Pneumatic radial tires for airplanes | — | 1989-02-28 |