Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819498 | Two-wavelength antireflection film and objective lens coated with two-wavelength antireflection film | Tadashi Watanabe, Masato Kohsaka, Takao Yamauchi, Kiyonobu Kurata | 2004-11-16 |
| 6771438 | Optical unit and method for assembling the same | Osamu Nishimura | 2004-08-03 |
| 6704151 | Optical unit and method for assembling the same | Osamu Nishimura | 2004-03-09 |