Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6679365 | Viscous Fluid Coupling | Hirofumi Katoh, Shinichi Kawada, Yasuo Fujita | 2004-01-20 |
| 6474458 | Viscous fluid coupling | Hirofumi Katoh, Shinichi Kawada, Yasuo Fujita | 2002-11-05 |
| 6305519 | Viscous fluid coupling | Hirofumi Katoh, Shinichi Kawada, Yasuo Fujita | 2001-10-23 |