Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326576 | Rubber composition employing soft black and a thermosetting resin and tires employing said composition | Yasuhiro Mizumoto, Yukio Tozawa, Masaru Hirai | 1982-04-27 |
| 4319619 | Radial-ply tire having low rolling resistance | Akinori Tokieda, Tadanobu Nagumo, Masaru Hirai | 1982-03-16 |