Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4781424 | Single mode channel optical waveguide with a stress-induced birefringence control region | Masao Kawachi, Kaname Jinguji, Norio Takato, Katsunari Okamoto | 1988-11-01 |
| 4750799 | Hybrid optical integrated circuit | Masao Kawachi, Yasufumi Yamada, Hiroshi Terui, Morio Kobayashi | 1988-06-14 |
| 4735677 | Method for fabricating hybrid optical integrated circuit | Masao Kawachi, Yasufumi Yamada, Hiroshi Terui, Morio Kobayashi | 1988-04-05 |
| 4380588 | Glass for infrared ray-transmitting optical fibers and optical fibers formed from said glass | Seiko Mitachi, Shuichi Shibata, Terutoshi Kanamori, Toyotaka Manabe | 1983-04-19 |
| 4343638 | Method for manufacturing glass fibers from an infrared ray-transmitting glass fiber material | Seiko Mitachi, Shuichi Shibata, Terutoshi Kanamori, Toyotaka Manabe | 1982-08-10 |
| 4308066 | Glass for optical fibers | Seiko Mitachi, Shuichi Shibata, Terutoshi Kanamori, Toyotaka Manabe | 1981-12-29 |