Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5019617 | Rubber compositions containing carbon blacks of specified physical characteristics | Takao Muraki | 1991-05-28 |
| 4947916 | Pneumatic radial tire having belt reinforcements | Yasuhiro Ishikawa, Sadakazu Takei, Shuji Takahashi | 1990-08-14 |