Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12136797 | Semiconductor optical device and optical transceiver module | Takafumi Taniguchi, Yasushi Sakuma | 2024-11-05 |
| 11462886 | Buried-type semiconductor optical device | Hironori Sakamoto, Shunya YAMAUCHI, Yoshihiro Nakai | 2022-10-04 |
| 11329450 | Electro-absorption optical modulator and manufacturing method thereof | Atsushi Nakamura, Takeshi Kitatani, Kaoru Okamoto | 2022-05-10 |
| 11133646 | Semiconductor optical device and optical transceiver module | Takafumi Taniguchi, Yasushi Sakuma | 2021-09-28 |
| 10230008 | Semiconductor light receiving device, optical receiver module and manufacturing method thereof | Masahiro EBISU, Hiroshi Hamada, Yasushi Sakuma | 2019-03-12 |
| 8488918 | Semiconductor optical device, optical transmitter module, optical transceiver module, and optical transmission equipment | Seiji Sumi, Kaoru Okamoto, Shunya YAMAUCHI, Yasushi Sakuma | 2013-07-16 |
| 7998766 | Semiconductor element and manufacturing method thereof | Yasushi Sakuma, Daisuke Nakai, Kazuhiro Komatsu | 2011-08-16 |
| 7772052 | Method of manufacturing semiconductor device | — | 2010-08-10 |
| 7687295 | Method for manufacturing optical semiconductor device | Ryu Washino, Susumu Sorimachi, Daisuke Nakai, Kaoru Okamoto | 2010-03-30 |
| 7615473 | Method of introducing ion and method of manufacturing semiconductor device | — | 2009-11-10 |
| 6833313 | Method of manufacturing semiconductor device by implanting rare gas ions | — | 2004-12-21 |
| 5200288 | Electrostatic developing toner with hydroxyaromatic carboxylic acid additive | Osamu Ando, Masako Takeuchi, Hitoshi Ono, Toshiyuki Sueyoshi | 1993-04-06 |