Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7050220 | Raman gain measuring method and apparatus | Takayuki Miyakawa | 2006-05-23 |
| 6782201 | Four fiber ring network optical switching circuit using branched inputs | Shu Yamamoto, Tetsuya Miyazaki, Tomohiro Otani | 2004-08-24 |
| 6403391 | Semiconductor light emitting device and method for manufacturing the same | Kohsuke Nishimura | 2002-06-11 |
| 6147901 | Semiconductor memory operating electrically and optically, retaining information without power supply | Haruhisa Sakata, Yuichi Matsushima | 2000-11-14 |
| 6037612 | Semiconductor light emitting device having nanostructure porous silicon and mesostructure porous silicon | Kohsuke Nishimura | 2000-03-14 |
| 5450813 | Method for manufacturing nitrogen-doped group II-VI compound semiconductor thin films | Kohsuke Nishimura, Kazuo Sakai | 1995-09-19 |
| 5423284 | Method for growing crystals of N-type II-VI compound semiconductors | Kohsuke Nishimura, Kazuo Sakai | 1995-06-13 |
| 5315422 | Optical Mach-Zehnder type logic element which performs an XOR operation | Katsuyuki Utaka, Yuichi Matsushima, Kazuo Sakai | 1994-05-24 |
| 5105302 | Spatial light modulator | Yoshinori Mimura | 1992-04-14 |
| 4702791 | Method for manufacturing bismuth-containing oxide single crystal | Yoshinori Mimura | 1987-10-27 |
| 4628485 | Magneto-optical recording medium | Fujio Tanaka, Nobutake Imamura | 1986-12-09 |
| 4559573 | Magneto-optical recording medium | Shinsuke Tanaka, Fujio Tanaka, Nobutake Imamura, Chuichi Ota | 1985-12-17 |