Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5438640 | Optical waveguide device for receiving functional component | Eisuke Sasaoka, Hiroshi Suganuma, Shinji Ishikawa, Tatsuhiko Saito | 1995-08-01 |
| 5432131 | Lead-containing fluoride glass, optical fiber and process for producing it | Takashi Kogo, Masashi Onishi, Yoshiaki Miyajima, Masataka Nakazawa | 1995-07-11 |
| 5422975 | Optical filter doped with rare earth elements and used with optical fibers | Akira Urano, Tomonori Kashiwara, Izumi Sankawa | 1995-06-06 |
| 5385594 | Method for fabricating an optical waveguide | Akira Urano, Haruhiko Aikawa, Shinji Ishikawa, Chisai Hirose, Masahide Saito | 1995-01-31 |
| 5384874 | Optical fiber rod lens device and method of making same | Shigeru Hirai, Toshiaki Kakii, Shinji Ishikawa | 1995-01-24 |
| 5381503 | Mode field diameter conversion fiber | Koji Nakazato, Masayuki Nishimura, Shigeru Tomita | 1995-01-10 |
| 5377294 | Optical functioning glass and apparatus using the same | Masahi Onishi, Koji Nakazato, Minoru Watanabe, Yoshiaki Miyajima | 1994-12-27 |
| 5368887 | Process for producing thin glass film by sol-gel method | Sumio Hoshino, Masumi Ito | 1994-11-29 |
| 5320658 | Process of drawing optical fiber | Yuichi Ohga, Shinji Ishikawa, Ichiro Yoshimura, Horoshi Yokota | 1994-06-14 |
| 5306322 | Process for thermal treatment of glass fiber preform | Shinji Ishikawa, Yuichi Ohga, Ichiro Tsuchiya, Hiroshi Yokota, Michihisa Kyoto | 1994-04-26 |
| 5259856 | Method of producing glass preform in furnace for heating glass | Yuichi Ohga, Shinji Ishikawa, Ichiro Tsuchiya, Hiroshi Yokota | 1993-11-09 |
| 5244846 | Optical functioning glass and apparatus using the same | Masashi Onishi, Koji Nakazato, Minoru Watanabe, Yoshiaki Miyajima | 1993-09-14 |
| 5243677 | Quartz optical waveguide and method for producing the same | Masumi Ito, Shinji Ishikawa, Haruhiko Aikawa, Sumio Hoshino | 1993-09-07 |
| 5238479 | Method for producing porous glass preform for optical fiber | Yuichi Ohga, Toshio Danzuka, Hiroshi Yokota | 1993-08-24 |
| 5224185 | Optical switch | Masumi Ito, Sumio Hoshino | 1993-06-29 |
| 5221309 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Minoru Watanabe | 1993-06-22 |
| 5221307 | Method for producing preform for polarization retaining optical fiber | Masahiro Takagi, Hiroshi Suganuma | 1993-06-22 |
| 5217516 | Method of making optical glass article | Yoichi Ishiguro, Akira Urano, Michihisa Kyoto | 1993-06-08 |
| 5211730 | Method for heating glass body | Manzo Yamaguchi, Hikaru SATOH | 1993-05-18 |
| 5202947 | Optical fiber component optical coupler and method of producing thereof | Sumio Hoshino, Masumi Ito, Masayuki Shigematsu, Hisasi Izumita | 1993-04-13 |
| 5193137 | Quartz optical waveguide and method for producing the same | Sumio Hoshino, Masumi Ito, Shinji Ishikawa, Haruhiko Aikawa | 1993-03-09 |
| 5179614 | Quartz optical waveguide and method for producing the same | Masumi Ito, Shinji Ishikawa, Haruhiko Aikawa, Sumio Hoshino | 1993-01-12 |
| 5163987 | Method for producing glass preform for optical fiber | Yoichi Ishiguro, Michihisa Kyoto | 1992-11-17 |
| 5160522 | Method for producing preform for polarization retaining optical fiber | Masahiro Takagi, Hiroshi Suganuma | 1992-11-03 |
| 5106401 | Process for thermal treatment of glass fiber preform | Shinji Ishikawa, Yuichi Ohga, Ichiro Tsuchiya, Hiroshi Yokota, Michihisa Kyoto | 1992-04-21 |