Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854360 | Pneumatic radial tire arrangement for vehicle | Sadakazu Takei, Yukio Tozawa | 1989-08-08 |
| 4745954 | Tread pattern | Kiyoshi Toyohara, Kojiro Ishikawa | 1988-05-24 |
| D290105 | Automobile tire | Tadayoshi Hiraga, Riichiro Mama, Tadashi Harashima, Izumi Kuramochi | 1987-06-02 |
| 4319619 | Radial-ply tire having low rolling resistance | Masatoshi Kozima, Akinori Tokieda, Masaru Hirai | 1982-03-16 |