Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6709997 | Silica glass article and manufacturing process therefor | Akira Urano, Tatsuhiko Saito, Yasuhiko Shishido, Masaharu Mogi, Michihisa Kyoto | 2004-03-23 |
| 6535679 | Optical fiber and method of manufacturing the same | Yoshio Yokoyama, Akira Urano | 2003-03-18 |
| 6333283 | Silica glass article and manufacturing process therefor | Akira Urano, Tatsuhiko Saito, Yasuhiko Shishido, Masaharu Mogi, Michihisa Kyoto | 2001-12-25 |
| 6324871 | Process for producing optical fiber preform | Motonori Nakamura, Yuichi Ohga | 2001-12-04 |
| 5983673 | Silica glass article and manufacturing process therefor | Akira Urano, Tatsuhiko Saito, Yasuhiko Shishido, Masaharu Mogi, Michihisa Kyoto | 1999-11-16 |
| 5788734 | Method for drawing glass preform for optical fiber | Sumio Hoshino, Yuichi Ohga, Masumi Ito, Katsuzo Mukai | 1998-08-04 |
| 5755849 | Method for elongating glass preform | Sumio Hoshino, Yuichi Ohga, Masumi Ito, Tatsuhiko Saito | 1998-05-26 |
| 5693115 | Process for production of glass preform for optical fiber including consolidating in a furnace with a temperature gradient | Masumi Ito, Yuichi Ohga, Sumio Hoshino, Ichiro Tsuchiya | 1997-12-02 |
| 5685889 | Method for flame abrasion of glass preform | Yuichi Ohga | 1997-11-11 |
| 5676725 | Method of manufacturing single-mode optical fiber | Masumi Ito, Sumio Hoshino | 1997-10-14 |
| 5674306 | Method and apparatus for drawing glass preform for optical fiber | Sumio Hoshino, Yuichi Ohga, Katsuzo Mukai | 1997-10-07 |
| 5624474 | Optical fiber preform manufacturing apparatus which measures a vertical load with three cells | Ichiro Tsuchiya, Hiroaki Ohta | 1997-04-29 |
| 5585137 | Apparatus and method of manufacturing fiber | Motonori Nakamura, Akira Inoue, Haruhiko Aikawa | 1996-12-17 |
| 5513983 | Apparatus for vitrifying soot preform for optical fiber | Masumi Ito, Ichiro Tuchiya, Yuichi Ohga, Sumio Hoshino | 1996-05-07 |
| 5470369 | Process for consolidation of porous preform for optical fiber | Ichiro Tsuchiya, Masumi Ito | 1995-11-28 |
| 5352261 | Apparatus for the production of hermetically coated optical fiber | Haruhiko Aikawa, Katsuya Nagayama | 1994-10-04 |
| 5338327 | Method of flame abrasion of glass preform | Yuichi Ohga, Masahide Saito, Kouji Amemiya, Hiroshi Yokota | 1994-08-16 |
| 5338328 | Apparatus of manufacturing hermetic coating optical fiber | Haruhiko Aikawa, Yoichi Ishiguro | 1994-08-16 |
| 5330548 | Method for producing glass preform for optical fiber | Masumi Ito, Ichiro Tsuchiya | 1994-07-19 |
| 5296011 | Method of manufacturing hermetic coating optical fiber | Haruhiko Aikawa, Yoichi Ishiguro | 1994-03-22 |
| 5250097 | Method for producing glass soot deposit | Tatsuhiko Saitoh | 1993-10-05 |
| 5238479 | Method for producing porous glass preform for optical fiber | Yuichi Ohga, Hiroo Kanamori, Hiroshi Yokota | 1993-08-24 |
| 5236482 | Method for producing glass preform for optical fiber | Masumi Ito, Tatsuhiko Saito, Ichiro Tsuchiya | 1993-08-17 |
| 5207813 | Method for producing glass article | Masumi Ito, Masahiro Takagi, Hiroshi Yokota | 1993-05-04 |
| 4978378 | Method for producing glass preform for optical fiber | Masumi Ito, Hiroshi Yokota, Masahiro Takagi | 1990-12-18 |