Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7126768 | Projection lens unit | Akihiro Yokota, Takeshi Kobayashi | 2006-10-24 |
| 7023629 | Projection lens unit | Isamu Terashima, Susumu Matsumoto | 2006-04-04 |
| 7012764 | Projection lens | Takeshi Kobayashi | 2006-03-14 |
| 6989946 | Projection lens | Takeshi Kobayashi | 2006-01-24 |
| 6942346 | Illuminating optical system and color image projecting device | Takeki Nakada | 2005-09-13 |
| 6798584 | Lens apparatus for projection | Susumu Matsumoto, Yasuhiro Sekine, Yasaburou Ootaka | 2004-09-28 |
| 6552859 | Lens apparatus for projection | Susumu Matsumoto, Yasuhiro Sekine, Yasaburou Ootaka | 2003-04-22 |
| 6171421 | Prism assembly and method for producing the same | Kazuhiko Murata, Akihiro Yokota | 2001-01-09 |
| 6022126 | Laser pointer | Takeshi Kobayashi | 2000-02-08 |
| 5371628 | Projection lens incorporating a pair of matching plastic lenses | Yoshihisa Shimoda | 1994-12-06 |