Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8134359 | Magnetic rotational-angle detector | Hiroshi Nishizawa, Hajime Nakajima, Takeshi Musha | 2012-03-13 |
| 7589314 | Optical encoder applying substantially parallel light beams and three periodic optical elements | Toru Oka | 2009-09-15 |
| 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, Hajime Nakajima, Masahiko Sakamoto, Toshikazu Kitagaki | 2009-05-26 |
| 7470892 | Optical encoder | Toru Oka, Hajime Nakajima | 2008-12-30 |
| 7405392 | Optical rotary encoder | Takeshi Musha, Toru Oka | 2008-07-29 |
| 7285769 | Optical encoder with reduced reflected light error having a light non-transparent portion with inclined surfaces | Toru Oka, Hajime Nakajima, Masahiko Sakamoto, Toshikazu Kitagaki | 2007-10-23 |
| 7034282 | Optical rotary encoder | Toru Oka | 2006-04-25 |
| 6972402 | Photoelectric rotary encoder | Toru Oka, Toshiro Nakashima, Hajime Nakajima, Hirokazu Sakuma, Takashi Okamuro +2 more | 2005-12-06 |
| 6956200 | Phase-shift photoelectric encoder | Toru Oka, Hajime Nakajima, Hirokazu Sakuma, Takashi Okamuro | 2005-10-18 |
| 6323786 | Absolute-value encoder device | Hirokazu Sakuma, Takashi Okamuro, Yukio Aoki, Toshikazu Satone | 2001-11-27 |
| 6232595 | Position detecting apparatus | Takashi Okamuro, Hirokazu Sakuma | 2001-05-15 |