Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814441 | Apparatus for measurement of polarized distribution, polarizing filter for using therein and polarizing filter assembly | Kazuhiko Ohnuma, Hidetaka Aeba | 2004-11-09 |
| 6778264 | Lens meter | Takeyuki Kato, Eiichi Yanagi | 2004-08-17 |
| 6749303 | Optometry apparatus and diffraction grating plate used in the same | Yasuo Kato, Makoto Fujino | 2004-06-15 |
| 6726326 | Observation apparatus | Hidetaka Aeba | 2004-04-27 |