Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6559951 | Air refractometer | Jun Ishikawa, Hiroki Masuda, Yutaka Kuriyama | 2003-05-06 |
| 6034773 | Length measuring machine and method using laser beams | Kunitoshi Nishimura, Kiyokazu Okamoto | 2000-03-07 |
| 5467289 | Method of and an apparatus for measuring surface contour | Makoto Abe, Shigekata Ohta, Hiroyuki Tokitoh, Takahumi Kano, Hiroyuki Hidaka | 1995-11-14 |
| 4557602 | Edge detector in optical measuring instrument | — | 1985-12-10 |