Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5970191 | Optical signal distributors | Michio Oba, Yasunari Kawabata, Kuniaki Jinnai, Nobuhiko Tsuji, Takeshi Kobayashi | 1999-10-19 |
| 5570442 | Design and manufacture of an optimized waveguide-type multiple branched star coupler | Kuniaki Jinnai, Hisashi Ohwada, Yasunari Kawabata | 1996-10-29 |
| 5493222 | Reflection type magnetooptic sensor head with faraday rotator | Kazushi Shirai, Toshihiro Shinbo, Norio Takeda | 1996-02-20 |
| 5463316 | Magnetooptic sensor head | Kazushi Shirai, Toshihiro Shinbo, Norio Takeda | 1995-10-31 |
| 5448667 | Waveguide type optical device with optical receptacles | Masukazu Hirata, Hidenori Kanjo | 1995-09-05 |
| 5345329 | Polarization-independent optical isolator | Kazushi Shirai, Toshihiko Takano, Norio Takeda | 1994-09-06 |
| 5343545 | Interconnectable multi-terminal star coupler | Takeshi Ota, Masukazu Hirata, Yasunari Kawabata | 1994-08-30 |
| 5278853 | Optical isolator | Kazushi Shirai, Makoto Sumitani, Norio Takeda | 1994-01-11 |
| 5160358 | Process for producing silica glass plate having controlled refractive index distribution | Osamu Kondo, Masukazu Hirata | 1992-11-03 |
| 5136274 | Humidity sensor | Tadashi Shimomura, Hidechika Wakabayashi, Yasunobu Shigaki | 1992-08-04 |
| 5091986 | Optical divider for multimode optical fiber systems | Norio Takeda, Shigeo Kataoka, Osamu Kondoh, Kuniaki Jinnai, Hisashi Ohwada +1 more | 1992-02-25 |
| 5058978 | Optical divider for multimode optical fiber systems | Osamu Kondoh, Tohru Nakajima, Yasunari Kawabata | 1991-10-22 |
| 4932760 | Magneto-optic garnet | Norio Takeda, Yasunori Tagami, Kazushi Shirai | 1990-06-12 |