Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667356 | Rubber composition | Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda | 2003-12-23 |
| 6525121 | Rubber composition | Susumu Kusakawa, Seizo Saito | 2003-02-25 |
| 6515055 | Rubber composition | Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda | 2003-02-04 |