Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11078110 | Glass wool, and vacuum heat insulation material using same | — | 2021-08-03 |
| 7295399 | Floppy disk drive | Makoto Konno, Hisateru Komatsu, Noriyuki Kobayashi | 2007-11-13 |
| 7102739 | Method for selection of optical fiber and system for inspection of optical fiber | Yoshiaki Nagao, Toshiyuki Yamamoto, Toshio Oshima | 2006-09-05 |
| 6943872 | Method for selection of optical fiber and system for inspection of optical fiber | Yoshiaki Nagao, Toshiyuki Yamamoto, Toshio Oshima | 2005-09-13 |
| 6771415 | Optical fiber for optical amplifier and fiber optic amplifier | Shinji Ishikawa, Motoki Kakui | 2004-08-03 |
| 6724527 | Optical amplifier and optical transmission system using same | Motoki Kakui | 2004-04-20 |
| 6687439 | Light-amplifying optical fiber and method of making the same | Shinji Ishikawa, Motoki Kakui, Toshimi Suzuki | 2004-02-03 |
| 6668048 | Conference communication system | Susumu Suga, Shoji Aizawa, Kazuhiro Takizawa, Ichiro Inoue | 2003-12-23 |
| 6577440 | Optical fiber for optical amplifier and fiber optic amplifier | Shinji Ishikawa, Motoki Kakui | 2003-06-10 |
| 6538806 | Optical fiber for optical amplifier and fiber optic amplifier | Shinji Ishikawa, Motoki Kakui | 2003-03-25 |
| 6490078 | Optical fiber for optical amplifier, optical fiber amplifier and optical fiber laser | Tadashi Enomoto, Masahiro Takagi, Yuichi Ohga, Motoki Kakui, Shinji Ishikawa +1 more | 2002-12-03 |
| 6452717 | Fiber optic amplifier | — | 2002-09-17 |
| 6243196 | Optical fiber for optical amplifier and fiber optic amplifier | Shinji Ishikawa, Motoki Kakui | 2001-06-05 |
| 5081068 | Method of treating surface of substrate with ice particles and hydrogen peroxide | Toshiaki Ohmori, Takaaki Fukumoto, Keisuke Namba | 1992-01-14 |