Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7084649 | Method and apparatus for measuring three-dimensional distribution of electric field | Tetsuya Kawanishi, Yoshiro Matsuo | 2006-08-01 |
| 6987904 | Variable-optical-delay apparatus | Tetsuya Kawanishi | 2006-01-17 |
| 6970655 | Method and circuit for generating single-sideband optical signal | Takashi Ono, Shinichi Shimotsu | 2005-11-29 |
| 6791733 | Resonance type optical modulator using symmetric or asymmetric electrode | Tetsuya Kawanishi, Kenichi Kubodera | 2004-09-14 |
| 6788832 | Optical modulator and optical signal and electric wave signal converter using same | Tetsuya Kawanishi, Satoshi Oikawa, Kaoru Higuma | 2004-09-07 |
| 6735010 | Resonator-type semiconductor optical modulator with asymmetrical electrode structure | Tetsuya Kawanishi | 2004-05-11 |
| 6304689 | General multi-function optical filter | Benjamin Dingel | 2001-10-16 |
| 4850666 | Slab-type optical device | Tadasi Sueta, Masaharu Matano | 1989-07-25 |
| 4674827 | Slab-type optical device | Tadasi Sueta, Masaharu Matano | 1987-06-23 |