Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10254184 | Semiconductor pressure sensor | Naoki Takayama, Michikazu Tomita, Yuki Suto | 2019-04-09 |
| 8067755 | Production device and production method for an optical device component having a grating structure | Akira Sakamoto | 2011-11-29 |
| 7849591 | Method of manufacturing a printed wiring board | Masahiro Okamoto, Shouji Itou, Osamu Nakao, Takanao Suzuki | 2010-12-14 |
| 7680375 | Production device and production method for an optical device component having a grating structure | Akira Sakamoto | 2010-03-16 |
| 7527919 | Production device and production method for an optical device component having a grating structure | Akira Sakamoto | 2009-05-05 |
| 7465916 | Optical detection sensor | Keiichi Horimoto, Akira Sakamoto | 2008-12-16 |
| 6931185 | Optical fiber, slanted optical fiber grating, band rejection optical filter, gain equalizing optical filter for optical amplifier, and optical amplifier module | Masaaki Sudo, Atuhiko Niwa | 2005-08-16 |
| 6928203 | Variable optical fiber grating and dispersion compensator | Akira Sakamoto | 2005-08-09 |
| 6836418 | Slant short-period grating | Akira Sakamoto, Masaaki Sudo, Reiko Kojima, Tomosada Inada, Kenji Nishide | 2004-12-28 |
| 6819834 | Optical fiber grating, optical fiber grating manufacturing method, and optical fiber grating manufacturing apparatus | Yuu Ishii, Michihiro Nakai, Kenji Nishide, Kensuke Shima | 2004-11-16 |
| 6810912 | Spool valve with decreased fluid force acting on spool | Yuuji Ogura, Satoshi Hamamoto, Zenzou Hamada | 2004-11-02 |
| 6594423 | Fiber type optical component | Akira Sakamoto, Sudo Masaaki | 2003-07-15 |
| 5996375 | Method of making an optical waveguide grating with two dissimilar irradiating steps | Michihiro Nakai, Kensuke Shima, Hiroshi Hidaka, Masaaki Sudoh, Tetsuya Sakai +2 more | 1999-12-07 |
| 5949934 | Optical waveguide grating and production method therefor | Kensuke Shima, Michihiro Nakai, Hiroshi Hidaka, Kuniharu Himeno, Akira Wada +4 more | 1999-09-07 |
| 5930437 | Optical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereof | Michihiro Nakai, Kensuke Shima, Hiroshi Hidaka, Masaaki Sudoh, Tetsuya Sakai +2 more | 1999-07-27 |
| 5732170 | Optical fiber filter | Tetsuya Sakai, Akira Wada, Ryozo Yamauchi | 1998-03-24 |