Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490096 | Achromatic lens and zoom lens using the same | — | 2002-12-03 |
| 6469836 | Eyepiece | Chikara Yamamoto | 2002-10-22 |
| 6400514 | Endoscope objective lens | Itsuji Minami | 2002-06-04 |
| 6383131 | Stereoscopic endoscope | Chikara Yamamoto | 2002-05-07 |