Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10469162 | Detection device | Yasuki Sakurai | 2019-11-05 |
| 7777957 | Optical filter and tunable filter | Yasuki Sakurai | 2010-08-17 |
| 6442324 | Optical attenuator and optical attenuator module | Daikou Tei, Masaharu Okada | 2002-08-27 |
| 6292616 | Optical attenuator and optical attenuator module | Daikou Tei, Masaharu Okada | 2001-09-18 |
| 6144025 | Laser light source apparatus | Daikou Tei | 2000-11-07 |
| 6122301 | Laser light source apparatus | Daikou Tei | 2000-09-19 |
| 6094446 | Wavelength stabilizing apparatus of laser light source | Daikou Tei, Masahiro Kawasugi | 2000-07-25 |
| 5214724 | Optical waveguide device with suppressed DC drift | Minoru Seino, Tadao Nakazawa, Yoshinobu Kubota, Masaharu Doi | 1993-05-25 |
| 4948219 | Method of connecting optical fibers and connection aids and fiber holders employed therewith, and optical waveguide modules employing same | Minoru Seino | 1990-08-14 |