Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6151147 | Optical communication apparatus | Atsunori Hattori, Seiichi Okoshi | 2000-11-21 |
| 6142680 | Optical transmission/reception module | Kimihiro Kikuchi, Atsunori Hattori, Shoichi Kyoya | 2000-11-07 |
| 6115180 | Optical multilayered-film filter | Toshio Hirai, Hiroshi Masumoto, Xinrong Wang | 2000-09-05 |
| 6106160 | Optical transmitting and receiving module | Kimihiro Kikuchi, Atsunori Hattori, Shoichi Kyoya | 2000-08-22 |
| 6088162 | Multilayered filter films | — | 2000-07-11 |
| 6047097 | Optical coupler | Kimihiro Kikuchi, Atsunori Hattori, Shoichi Kyoya | 2000-04-04 |
| 6034820 | Dielectric optical filter with absorptive metal layer | Koichi Kamiyama | 2000-03-07 |
| 5982547 | Optical filter | Koichi Kamiyama | 1999-11-09 |
| 5751487 | Multilayered filter films and method for making the same | — | 1998-05-12 |
| 5737138 | Optical waveguide device and method of making the same | — | 1998-04-07 |
| 5429998 | Crystalline sialon having wurtzite structure | Toshio Hirai, Makoto Sasaki | 1995-07-04 |
| 5164221 | Forming die manufacturing method | Toshio Hirai, Makoto Sasaki | 1992-11-17 |
| 5093150 | Synthesis method by plasma chemical vapor deposition | Toshio Hirai, Makoto Sasaki | 1992-03-03 |