Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489389 | Rubber composition for tire treads | Toshiyuki Ohta, Kenji Matsuo, Jun Sakiyama | 2002-12-03 |
| 5753365 | Rubber composition and all season type pneumatic tires made from a rubber composition | Yoshiyuki Morimoto, Koji Yamauchi, Tatsuro Hamada, Masanori Aoyama, Eiji Yamanaka +2 more | 1998-05-19 |
| 5351734 | Pneumatic tire with foam rubber in the tread | Hiroshi Mouri, Yasuyoshi Kawaguchi, Michio Ishii, Toshiro Iwata | 1994-10-04 |
| 5181976 | Pneumatic tire having expanded outer tread rubber layer | Kojiro Yamaguchi, Eiji Takiguchi, Toshiro Iwata | 1993-01-26 |
| 5147477 | Pneumatic tire having foamed tread rubber | Hiroshi Mouri, Yasuyoshi Kawaguchi, Michio Ishii, Toshiro Iwata | 1992-09-15 |
| 4775724 | Rubber compositions with granules of sulfur, oil and methylstyrene | Masaaki Morimoto | 1988-10-04 |