Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8546722 | Laser processing apparatus and processing method employed therein | Eiichiro Yamada, Akira Inoue, Hiroshi Kohda, Hitoshi Hatayama, Takemi Hasegawa | 2013-10-01 |
| 8303738 | Metal heating apparatus, metal heating method, and light source apparatus | Eiichiro Yamada, Hiroshi Kohda, Hiroshi Suganuma, Akira Inoue, Kazuhito Saito | 2012-11-06 |
| 6599039 | Optical transmission monitoring apparatus, optical transmission monitoring method, optical amplification system, method of controlling optical amplification system, and optical transmission system | — | 2003-07-29 |
| 6359727 | Optical amplifier for wavelength-multiplexing transmission | — | 2002-03-19 |
| 6282361 | Multi-channel variable optical attenuator | Masayuki Nishimura | 2001-08-28 |
| 5721635 | Optical fiber amplifier and optical amplifier repeater | Masayuki Shigematsu, Tomonori Kashiwada, Masayuki Nishimura | 1998-02-24 |
| 5640269 | Optical fiber amplifier and optical amplifier repeater | Masayuki Shigematsu, Tomonori Kashiwada, Masayuki Nishimura | 1997-06-17 |
| 5572357 | Optical system for amplifying signal light | Masayuki Nishimura | 1996-11-05 |
| 5532870 | Optical fiber amplifier and optical amplifier repeater | Masayuki Shigematsu, Tomonori Kashiwada, Masayuki Nishimura | 1996-07-02 |
| 5446820 | Mode field diameter conversion optical fiber | Shinji Ishikawa, Hiroo Kanamori, Masayuki Nishimura, Yuichi Ohga | 1995-08-29 |
| 5381503 | Mode field diameter conversion fiber | Hiroo Kanamori, Masayuki Nishimura, Shigeru Tomita | 1995-01-10 |
| 5377294 | Optical functioning glass and apparatus using the same | Masahi Onishi, Hiroo Kanamori, Minoru Watanabe, Yoshiaki Miyajima | 1994-12-27 |
| 5337401 | Optical functioning glass and method of manufacturing same, optical fiber, waveguide device, and laser device | Masashi Onishi, Yoshiki Chigusa, Minoru Watanabe, Yoshiaki Miyajima | 1994-08-09 |
| 5253322 | Optical functioning glass and fiber amplifier | Masashi Onishi, Yoshiki Chigusa, Minoru Watanabe, Yoshiaki Miyajima, Tomoki Sugawa | 1993-10-12 |
| 5244846 | Optical functioning glass and apparatus using the same | Masashi Onishi, Hiroo Kanamori, Minoru Watanabe, Yoshiaki Miyajima | 1993-09-14 |