Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5786554 | Shift switching device for torque converter | Kazunori Umezawa | 1998-07-28 |
| 5496978 | Auto-cancel device | Kazunori Umezawa | 1996-03-05 |
| 4707057 | Optical switching unit | Fumitaka Takahashi, Yoshihiko Kimura, Hideo Tsubata, Nobuaki Ohji | 1987-11-17 |