Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831731 | Projection optical system and an exposure apparatus with the projection optical system | Yasuhiro Omura, Naomasa Shiraishi, Issey Tanaka, Soichi Owa, Shunsuke Niisaka | 2004-12-14 |
| 6788389 | Production method of projection optical system | Youhei Fujishima, Hironori Ikezawa, Yasuhiro Omura, Takeshi Suzuki | 2004-09-07 |
| 6719270 | Plug for fluid pipe connector | — | 2004-04-13 |