Issued Patents 1997
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675895 | Portable circular saw having a dust collecting function | Seiji Akiba | 1997-10-14 |
| 5669708 | Optical element, production method of optical element, optical system, and optical apparatus | Kiyoto Mashima, Osamu Tanitsu | 1997-09-23 |
| 5640284 | Optical reflector, illumination optical system, light source system and illumination optical apparatus | Osamu Tanitsu, Hideo Hirose | 1997-06-17 |
| 5636003 | Illumination optical apparatus and scanning exposure apparatus | Osamu Tanitsu, Noriaki Yamamoto | 1997-06-03 |
| 5615047 | Illumination apparatus and exposure apparatus using it | Hideki Komatsuda, Hideo Hirose | 1997-03-25 |
| 5594526 | Optical integrator and projection exposure apparatus using the same | Hideki Komatsuda | 1997-01-14 |