Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6517201 | Method and apparatus for indicating spectacle lens performance | — | 2003-02-11 |
| 6329989 | Ocular optical system simulating method and simulating apparatus | Ikuka Tanaka | 2001-12-11 |
| 6012813 | Aspherical spectacle lens | — | 2000-01-11 |
| 5875017 | Ocular optical system simulation apparatus | Kazuhiko Ohnuma, Atsuo Minato | 1999-02-23 |
| 5825454 | Aspherical spectacle lens | Tetsuma Yamakaji, Atsuo Minato | 1998-10-20 |
| 5677750 | Apparatus for and method of simulating ocular optical system | — | 1997-10-14 |