Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666196 | Optical detection apparatus for detecting information relating to relative displacement of an object on whch a diffraction grating is formed | Satoshi Ishii, Hiroshi Kondo, Yasushi Kaneda | 1997-09-09 |
| 5481106 | Encoder with an optical scale and interference of zero and first order diffraction beams | Masaru Nyui, Masahiko Igaki | 1996-01-02 |
| 5448358 | Optical apparatus and displacement-information measuring apparatus using the same | Hiroshi Kondo, Satoshi Ishii, Yasushi Kaneda | 1995-09-05 |
| 5198873 | Encoder utilizing interference using multi-mode semiconductor laser | Tetsuharu Nishimura, Yoichi Kubota, Masaaki Tsukiji, Satoshi Ishii | 1993-03-30 |