Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059408 | Carbon black for tire tread | — | 1991-10-22 |
| 4786677 | Rubber composition containing a carbon black particles having two modal diameters in the aggregate | Kiyonari Nakai | 1988-11-22 |
| 4784695 | Carbon black for blending in rubber | Kiyonari Nakai | 1988-11-15 |