Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643463 | Optical wavelength division multiplexing transmission network system using transmitting/receiving apparatuses having 2-input and 2-output optical path switching elements | Senichi Suzuki, Kennosuke Fukami, Yuji Akatsu, Kazutosi Kato, Mitsuru Harada +2 more | 2003-11-04 |
| 5572611 | Optical signal processor, method of its control, method of its designing, and method of its production | Kaname Jinguji, Koichi Takiguchi | 1996-11-05 |
| 5546483 | Integrated optical waveguide circuit and optical branch line test system using the same | Yasuyuki Inoue, Katsunari Okamoto, Norio Takato, Fumihiko Yamamoto, Hiroyuki Suda +2 more | 1996-08-13 |
| 5513285 | Compact optical switching module including thin-film heaters and trimmed thick-film fixed resistors | Toshiyuki Kawashima, Jiro Utsunomiya, Kiyoshi Kurosawa, Iida Saburo, Ryo Nagase +4 more | 1996-04-30 |
| 5414548 | Arrayed-wave guide grating multi/demultiplexer with loop-back optical paths | Yoshiaki Tachikawa, Hiroshi Takahashi, Kyo Inoue | 1995-05-09 |
| 5247594 | Waveguide-type optical matrix switch | Masayuki Okuno, Kuniharu Kato, Katsumi Katoh | 1993-09-21 |
| 5204921 | Automated optical main distributing frame system | Tsuneo Kanai, Shigefumi Hosokawa, Kunihiko Sasakura, Syuichirou Inagaki, Shigeru Umemura +3 more | 1993-04-20 |
| 5165001 | Guided-wave optical branching device | Akihiro Takagi, Kaname Jinguji | 1992-11-17 |
| 5117470 | Guided-wave optical circuit and method for adjusting a characteristic thereof | Yasuyuki Inoue, Masayuki Okuno | 1992-05-26 |
| 5044715 | Guided-wave optical branching components and optical switches | Kaname Jinguji, Norio Takato, Akihiro Takagi | 1991-09-03 |
| 4978188 | Integrated optical device and method for manufacturing thereof | Norio Takato, Kaname Jinguji, Akio Sugita, Shin Sumida | 1990-12-18 |
| 4900112 | Integrated optical device and method for manufacturing thereof | Norio Takato, Kaname Jinguji, Akio Sugita, Shin Sumida | 1990-02-13 |
| 4838916 | Method for making single-polorization, single mode optical fibers | Takao Edahiro, Tetsuo Miya, Yutaka Sasaki, Katusunari Okamoto | 1989-06-13 |
| 4781424 | Single mode channel optical waveguide with a stress-induced birefringence control region | Kaname Jinguji, Norio Takato, Mitsuho Yasu, Katsunari Okamoto | 1988-11-01 |
| 4763977 | Optical fiber coupler with tunable coupling ratio and method of making | Brian S. Kawasaki, Kenneth O. Hill, Derwyn C. Johnson | 1988-08-16 |
| 4750799 | Hybrid optical integrated circuit | Yasufumi Yamada, Mitsuho Yasu, Hiroshi Terui, Morio Kobayashi | 1988-06-14 |
| 4735677 | Method for fabricating hybrid optical integrated circuit | Yasufumi Yamada, Mitsuho Yasu, Hiroshi Terui, Morio Kobayashi | 1988-04-05 |
| 4406684 | Core torch for fabricating single-mode optical fiber preforms | Satoru Tomaru, Takao Edahiro, Shoichi Suto | 1983-09-27 |
| 4367085 | Method of fabricating multi-mode optical fiber preforms | Shoichi Suto, Fumiaki Hanawa, Takao Edahiro, Motohiro Nakahara | 1983-01-04 |
| 4345928 | Fabrication method of single-mode optical fiber preforms | Satoru Tomaru, Takao Edahiro, Shoichi Suto | 1982-08-24 |
| 4306767 | Single-mode optical fiber | Tadashi Miyashita, Shintaro Sentsui, Yasuro Furui, Toshiaki Kuroha | 1981-12-22 |