Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11372145 | Optical element and optical circuit | Takayuki Kawashima, Toshikazu Ijiro, Takafumi Chiba | 2022-06-28 |
| 11125925 | Optical element | Takayuki Kawashima, Takafumi Chiba, Toshikazu Ijiro, Hiroyuki Tsuda, Hiroshi Takahashi | 2021-09-21 |
| 8045043 | Optical module and imaging device | Tetsuya Ogata | 2011-10-25 |
| 7411677 | Driverless ellipsometer and ellipsometry | Takashi Sato, Naoki Hashimoto, Yoshihiro Sasaki | 2008-08-12 |
| 7265834 | Polarization analyzer | Takashi Sato, Takayuki Kawashima, Wataru Ishikawa | 2007-09-04 |
| 7136217 | Integrated optical element | Takayuki Kawashima, Wataru Ishikawa, Takashi Sato | 2006-11-14 |
| 6977774 | Polarizer | Yasuo Otera, Takayuki Kawashima | 2005-12-20 |
| 6852203 | Three-dimensional periodical structure, its manufacturing method, and method of manufacturing film | Hiroyuki Sakaki, Kazuo Shiraishi | 2005-02-08 |
| 6317554 | Self-waveguide optical circuit | Hideo Kosaka | 2001-11-13 |
| 6188819 | Wavelength dividing circuit | Hideo Kosaka | 2001-02-13 |
| 5848203 | Polarization-independent optical isolator | Kazuo Shiraishi, Masashi Shimo | 1998-12-08 |
| 5040863 | Optical isolator | Kazuo Shiraishi, Kazutaka Baba, Seiji Hattori | 1991-08-20 |
| 4746191 | Optical switch | Makoto Minakata, Mitsuhiro Takata, Sachio Toyota | 1988-05-24 |
| RE32475 | Optical waveguide transmitting light wave energy in single mode | Shigeo Nishida, Yoichi Ohtaka, Seiichi Onoda | 1987-08-18 |
| 4206967 | Optical fiber | Seiichi Onoda, Shigeo Nishida, Toshiki Tanaka, Tsuneo Suganuma, Masao Sumi | 1980-06-10 |