Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6407868 | Cross dichroic prism, method of making the same, and full-color projector using the same | Tetsuo Hattori, Kiyoshi Numazaki, Yasuhiro Iwaguchi, Shuichi Sugai, Tadaaki Nakamura +1 more | 2002-06-18 |
| 6101041 | Cross dichroic prism, method of making the same, and full-color projector using the same | Tetsuo Hattori, Kiyoshi Numazaki, Yasuhiro Iwaguchi, Shuichi Sugai, Tadaaki Nakamura +1 more | 2000-08-08 |
| 6062694 | Projection type display apparatus | Yoshiro Oikawa, Motoi Ueda, Masaaki Kusano, Tetsuo Hattori | 2000-05-16 |
| 5946056 | Color composing optical system | Tetsuo Hattori | 1999-08-31 |
| 4268312 | Optical glass | Takeo Ichimura | 1981-05-19 |
| 4252567 | Glasses for eyeglass lenses | Takeo Ichimura | 1981-02-24 |
| 4193807 | Optical glass | Takeo Ichimura | 1980-03-18 |