Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5148505 | Optical semiconductor waveguide switch | Hisaharu Yanagawa, Yoshiyuki Kamata, Ken Ueki | 1992-09-15 |
| 5033811 | Optical switch | Hisaharu Yanagawa, Yoshiyuki Kamata, Ken Ueki | 1991-07-23 |
| 4958897 | Thin film optical component for use in optical transmission lines and method of manufacturing the same | Hisaharu Yanagawa, Toshihiro Ochiai, Hirokazu Hayakawa | 1990-09-25 |
| 4900118 | Multiple-fiber optical component and method for manufacturing of the same | Hisaharu Yanagawa, Hirokazu Hayakawa, Mikio Ogai, Toshihiro Ochiai | 1990-02-13 |
| 4886335 | Optical fiber switch system | Hisaharu Yanagawa, Toshihiro Ochiai, Shizuka Yamaguchi, Tsuyoshi Fumeno, Hiroshi Raijo +1 more | 1989-12-12 |
| 4790648 | Closure for cable connector | Shin-ichiro Ohta, Etsuo Tanabe, Shigeru Tachigami | 1988-12-13 |