Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6709997 | Silica glass article and manufacturing process therefor | Toshio Danzuka, Tatsuhiko Saito, Yasuhiko Shishido, Masaharu Mogi, Michihisa Kyoto | 2004-03-23 |
| 6563989 | Optical fiber coupler and optical fiber for optical fiber coupler | Shinji Ishikawa, Masayuki Kiya | 2003-05-13 |
| 6535679 | Optical fiber and method of manufacturing the same | Yoshio Yokoyama, Toshio Danzuka | 2003-03-18 |
| 6360046 | Dispersion-shifted optical fiber | Eisuke Sasaoka, Takatoshi Kato, Yoshio Yokoyama | 2002-03-19 |
| 6333283 | Silica glass article and manufacturing process therefor | Toshio Danzuka, Tatsuhiko Saito, Yasuhiko Shishido, Masaharu Mogi, Michihisa Kyoto | 2001-12-25 |
| 6275638 | Dispersion-shifted fiber | Eisuke Sasaoka, Takatoshi Kato, Yoshio Yokoyama | 2001-08-14 |
| 5983673 | Silica glass article and manufacturing process therefor | Toshio Danzuka, Tatsuhiko Saito, Yasuhiko Shishido, Masaharu Mogi, Michihisa Kyoto | 1999-11-16 |
| 5660611 | Method for producing glass thin film | Shinji Ishikawa, Haruhiko Aikawa, Chizai Hirose, Hiroo Kanamori, Masahide Saitoh | 1997-08-26 |
| 5556442 | Method for fabricating an optical waveguide | Hiroo Kanamori, Haruhiko Aikawa, Shinji Ishikawa, Chisai Hirose, Masahide Saito | 1996-09-17 |
| 5551966 | Optical waveguide and method of fabricating the same | Chisai Hirose, Hiroo Kanamori, Shinji Ishikawa, Haruhiko Aikawa, Masahide Saito | 1996-09-03 |
| 5503650 | Method for producing a glass thin film with controlloing an oxide vapor of an additive | Shinji Ishikawa, Haruhiko Aikawa, Chizai Hirose, Hiroo Kanamori, Masahide Saitoh | 1996-04-02 |
| 5422975 | Optical filter doped with rare earth elements and used with optical fibers | Hiroo Kanamori, Tomonori Kashiwara, Izumi Sankawa | 1995-06-06 |
| 5385594 | Method for fabricating an optical waveguide | Hiroo Kanamori, Haruhiko Aikawa, Shinji Ishikawa, Chisai Hirose, Masahide Saito | 1995-01-31 |
| 5364428 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Hideo Kakuzen | 1994-11-15 |
| 5217516 | Method of making optical glass article | Yoichi Ishiguro, Hiroo Kanamori, Michihisa Kyoto | 1993-06-08 |
| 5215565 | Method for making superconductor filaments | Kenichi Takahashi, Kazuya Ohmatsu, Masashi Onishi | 1993-06-01 |
| 5203899 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Hideo Kakuzen | 1993-04-20 |
| 5158587 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Minoru Watanabe | 1992-10-27 |
| 5145507 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Hideo Kakuzen | 1992-09-08 |
| 5053068 | High pressure fluorine method for producing preform for optical fiber | Michihisa Kyoto, Yoichi Ishiguro, Minoru Watanabe | 1991-10-01 |
| 5022904 | Method of making optical glass article | Yoichi Ishiguro, Hiroo Kanamori, Michihisa Kyoto | 1991-06-11 |
| 4968662 | Method of the production of ceramic superconductor filaments | Kenichi Takahashi, Kazuya Ohmatsu, Masashi Onishi | 1990-11-06 |
| 4900894 | Method of heating a quartz glass tube | Gotaro Tanaka, Hiroshi Suganuma, Masahiro Takagi, Shunichi Mizuno | 1990-02-13 |