Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7499613 | Y branch circuit and method for manufacturing the same | Yasuhiro Hida, Toshimi Kominato, Yasuyuki Inoue, Yasumori Ohmura | 2009-03-03 |
| 7086789 | Optical element module with a primary coated optical fiber | Nobuo Tomita, Fumiaki Hanawa, Satoru Konno, Yuichi Kikuchi, Jyunko Katoh +3 more | 2006-08-08 |
| 5546483 | Integrated optical waveguide circuit and optical branch line test system using the same | Yasuyuki Inoue, Masao Kawachi, Katsunari Okamoto, Fumihiko Yamamoto, Hiroyuki Suda +2 more | 1996-08-13 |
| 5044715 | Guided-wave optical branching components and optical switches | Masao Kawachi, Kaname Jinguji, Akihiro Takagi | 1991-09-03 |
| 4978188 | Integrated optical device and method for manufacturing thereof | Masao Kawachi, Kaname Jinguji, Akio Sugita, Shin Sumida | 1990-12-18 |
| 4900112 | Integrated optical device and method for manufacturing thereof | Masao Kawachi, Kaname Jinguji, Akio Sugita, Shin Sumida | 1990-02-13 |
| 4781424 | Single mode channel optical waveguide with a stress-induced birefringence control region | Masao Kawachi, Kaname Jinguji, Mitsuho Yasu, Katsunari Okamoto | 1988-11-01 |
| 4320292 | Coordinate input apparatus | Shigeru Oikawa, Yuzo Katayama, Takashi Kurokawa | 1982-03-16 |
| 4240849 | Polymer optical circuit with optical lead-fibers and method of fabricating the same | Takashi Kurokawa, Shigeru Oikawa, Yuzo Katayama | 1980-12-23 |