Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6309557 | Magnetic garnet material and faraday rotator using the same | Atsushi Ooido, Kazuhito Yamasawa, Masanori Goto | 2001-10-30 |
| 6130778 | Composite optical element, optical isolator, optical circulator, optical switch and process for producing them | Kenjiro Hata | 2000-10-10 |
| 5841922 | Optical fiber terminal with optical isolator and semiconductor laser module using the same | Makoto Sekijima, Kenjiro Hata | 1998-11-24 |
| 5691845 | Optical isolator, optical isolator with fiber and method for making the same | Yoichi Kanagawa, Kenjiro Hata, Makoto Sekijima | 1997-11-25 |
| 5640516 | Faraday rotator | Kazuhito Yamasawa, Masaaki Kobayashi | 1997-06-17 |
| 5619367 | Apparatus and method for measuring magnetic fields employing magneto-optic element | Yoshikazu Narumiya, Makoto Nakazawa | 1997-04-08 |
| 5500915 | Optical fiber terminal pitted with optical isolator | Masaaki Kobayashi, Kenjiro Hata | 1996-03-19 |
| 5499307 | Optical isolator and polarization splitter therefor | — | 1996-03-12 |
| 5477376 | Optical attenuators and optical modulators employing magneto-optic element | Yoshikazu Narumiya, Makoto Nakazawa | 1995-12-19 |
| 5359689 | Optical fiber terminal fitted with optical isolator and method of assembling the same | Kenjiro Hata, Masaaki Kobayashi | 1994-10-25 |
| 5245471 | Polarizers, polarizer-equipped optical elements, and method of manufacturing the same | Naoki Hanashima, Yoshikazu Narumiya | 1993-09-14 |