Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7496261 | Dispersion compensating optical fiber and dispersion compensating optical fiber module | Kazuhiko Aikawa, Yutaka Nagasawa, Shogo Shimizu, Takaaki Suzuki, Masakazu Nakayama +3 more | 2009-02-24 |
| 7076139 | Optical fiber and optical transmission system | Kazuhiko Aikawa, Takashi Suzuki, Akira Wada, Takaaki Suzuki, Shoichiro Matsuo +1 more | 2006-07-11 |
| 7050672 | Polarization-maintaining optical fiber and polarization-maintaining optical fiber component | Ryokichi Matsumoto, Hideki Sasaki, Kenji Nishide, Shigefumi Yamasaki | 2006-05-23 |
| 6965719 | Dispersion compensating optical fiber and dispersion compensating optical fiber module | Kazuhiko Aikawa, Yutaka Nagasawa, Shogo Shimizu, Takaaki Suzuki, Masakazu Nakayama +3 more | 2005-11-15 |
| 6535678 | Multimode optical fiber with a higher order mode removing function | Tomio Abiru, Shoichiro Matsuo, Koichi Takahashi | 2003-03-18 |
| 6463195 | Method of manufacturing polarization-maintaining optical fiber coupler | Hideki Sasaki, Hiroshi Hidaka, Kenji Nishide, Shigefumi Yamasaki, Ryokichi Matsumoto +1 more | 2002-10-08 |
| 6459829 | Multiple wavelength excitation optical multiplexing device, multiple wavelength excitation light source incorporating aforementioned device, and optical amplifier | Akira Wada, Kenji Nishide, Shigefumi Yamasaki | 2002-10-01 |
| 6442313 | Optical fiber grating and manufacturing method thereof | Akira Wada, Tetsuya Sakai, Nobuyuki Tanaka, Kensuke Shima, Kenji Nishide +1 more | 2002-08-27 |
| 6298183 | Optical fiber grating and manufacturing method therefor | Akira Wada, Tetsuya Sakai, Nobuyuki Tanaka, Kensuke Shima, Kenji Nishide +1 more | 2001-10-02 |
| 5996375 | Method of making an optical waveguide grating with two dissimilar irradiating steps | Michihiro Nakai, Kensuke Shima, Hiroshi Hidaka, Satoshi Okude, Masaaki Sudoh +2 more | 1999-12-07 |
| 5995695 | Dispersion compensating optical fiber | Kazuhiko Aikawa, Akira Wada, Kuniharu Himeno | 1999-11-30 |
| 5949934 | Optical waveguide grating and production method therefor | Kensuke Shima, Michihiro Nakai, Hiroshi Hidaka, Kuniharu Himeno, Satoshi Okude +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, Satoshi Okude, Masaaki Sudoh +2 more | 1999-07-27 |
| 5848208 | Optical-fiber coupler and manufacturing process therefor | Fumio Suzuki, Hideki Sasaki, Shigefumi Yamasaki, Tomio Abiru | 1998-12-08 |
| 5732170 | Optical fiber filter | Satoshi Okude, Tetsuya Sakai, Akira Wada | 1998-03-24 |
| 5689578 | Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler | Kuniharu Himeno, Minoru Sawada, Fumio Suzuki, Kazuhiko Aikawa, Tetsuo Nozawa +1 more | 1997-11-18 |
| 5526459 | Erbium-doped silica optical fiber preform | Daiichirou Tanaka, Akira Wada, Tetsuya Sakai, Tetsuo Nozawa | 1996-06-11 |
| 5474588 | Solution doping of a silica preform with erbium, aluminum and phosphorus to form an optical fiber | Daiichirou Tanaka, Akira Wada, Tetsuya Sakai, Tetsuo Nozawa | 1995-12-12 |
| 5360464 | Method for splicing and reinforcing carbon coated optical fibers | Akira Wada, Keiji Oohashi, Shinji Araki, Tsuyoshi Shimomichi | 1994-11-01 |
| 5267339 | Optical fiber having a core with a repeatedly changing constitutional parameter | Akira Wada, Tetsuo Nozawa, Daiichirou Tanaka, Tetsuya Sakai | 1993-11-30 |
| 5223014 | Method for splicing and reinforcing carbon coated optical fibers | Akira Wada, Keiji Oohashi, Shinji Araki, Tsuyoshi Shimomichi | 1993-06-29 |
| 5066087 | Optical fiber coupler | Noboru Kawakami, Fumio Suzuki | 1991-11-19 |
| 5058979 | Optical fiber coupler and a fabrication method for the same | Noboru Kawakami, Fumio Suzuki | 1991-10-22 |
| 5030265 | Optical fiber coupler manufacturing device | Fumio Suzuki, Noboru Kawakami, Yoshio Kikuchi | 1991-07-09 |
| 5024501 | Manufacturing method for polarization maintaining optical fiber couplers | Hiroyuki Taya, Mikio Yoshinuma, Takeshi Yamada, Kenji Nishide, Fumio Suzuki +1 more | 1991-06-18 |