Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861809 | Friction material | Hiroyasu Ogawa, Kenji Shimazaki | 1989-08-29 |
| 4339021 | Carbon fiber reinforced carbon friction element and method of making | Hiroyuki Kosuda | 1982-07-13 |
| 4195649 | Tobacco smoke filter | Katsuichi Noguchi, Kazuo Maeda, Yuriko Anzai, Minoru Hirai, Kazuo Izumi | 1980-04-01 |