Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6180224 | Method of absorbing rays outside a visible region | Hiroki Katono, Takeo Ogihara, Teruo Sakagami, Osamu Tanegashima | 2001-01-30 |
| 5820779 | Polymeric optical low-pass filter and device thereof | Takeo Ogihara, Hiroki Katono, Teruo Sakagami, Hiroshi Hasebe, Haruyoshi Takatu | 1998-10-13 |
| 5793544 | Production process of composite optical filter | Takeo Ogihara, Hiroki Katono, Teruo Sakagami | 1998-08-11 |
| 5759448 | Plastic optical material | Hiroki Katono, Takeo Ogihara, Teruo Sakagami | 1998-06-02 |
| 5691838 | Infrared-blocking optical fiber | Hiroki Katono, Takeo Ogihara, Teruo Sakagami | 1997-11-25 |
| 5672655 | Plastic optical material and production process thereof | Hiroki Katono, Takeo Ogihara, Teruo Sakagami | 1997-09-30 |
| 5611965 | Plastic optical filter | Takeo Ogihara, Hiroki Katono, Teruo Sakagami | 1997-03-18 |