Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6280848 | Antireflection coating | Masaru Okumura | 2001-08-28 |
| 6190013 | Polarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitter | Yasumasa Sawai | 2001-02-20 |
| 6155685 | Projector | Yasumasa Sawai, Nobuo Mushiake | 2000-12-05 |
| 5967635 | Polarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitter | Yasumasa Sawai | 1999-10-19 |
| 4921760 | Anti-reflection coating of optical part made of synthetic resin | Masaru Okumura | 1990-05-01 |
| 4784467 | Multi-layered anti-reflection coating | Sadao Akatsuka | 1988-11-15 |
| 4742236 | Flame detector for detecting phase difference in two different wavelengths of light | Yuichi Kawakami | 1988-05-03 |
| 4387960 | Multi-layer anti-reflection coating | — | 1983-06-14 |