Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7538313 | Optical encoder having a no track portion of an optical scale being placed at a position symmetrical to a light non-transparent portion within an irradiation region of incident light | Toru Oka, Yoichi Ohmura, Hajime Nakajima, Masahiko Sakamoto | 2009-05-26 |
| 7285769 | Optical encoder with reduced reflected light error having a light non-transparent portion with inclined surfaces | Toru Oka, Yoichi Ohmura, Hajime Nakajima, Masahiko Sakamoto | 2007-10-23 |