Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357716 | Holding device for holding optical element to be ground | Takayuki Kishida, Kazuo Ushiyama, Masaki Watanabe | 1994-10-25 |
| 5291692 | Polishing work holder | Takayuki Kishida, Masaki Watanabe, Kazuo Ushiyama | 1994-03-08 |
| 5140777 | Method and apparatus for polishing optical elements | Kazuo Ushiyama, Masaki Watanabe, Takayuki Kishida | 1992-08-25 |
| 5131159 | Spherometer | Masaki Watanabe, Fumiaki Munakata | 1992-07-21 |