Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10766120 | Method and device for manufacturing compressor scrolls, compressor scroll, and scroll compressor | Takayuki Hagita, Takaharu Maeguchi, Masafumi Hamasaki, Yukihiro Kawai, Hiroshi Ogawa +5 more | 2020-09-08 |
| 9739695 | Water jet peening compressive residual stress test method, test device, and test facility | Takahiro Ota, Nobuyuki Hori | 2017-08-22 |
| 7496296 | Optical transmission path monitoring system, monitoring apparatus therefor and monitoring method therefor | — | 2009-02-24 |
| 6941075 | Wavelength division multiplexing optical transmission method and system | Hiroaki Murakami | 2005-09-06 |
| 6496302 | Optical amplifier | — | 2002-12-17 |
| 6442309 | Optical amplifier | — | 2002-08-27 |
| 6417487 | Laser beam machining head | Yasumi Nagura, Michisuke Nayama, Takashi Ishide, Yoshio Hashimoto, Koji Okimura | 2002-07-09 |
| 6294754 | Laser beam machining head | Yasumi Nagura, Michisuke Nayama, Takashi Ishide, Yoshio Hashimoto, Koji Okimura +4 more | 2001-09-25 |
| 6271960 | Method and apparatus for wavelength conversion of signal light | Satoshi Ishii | 2001-08-07 |
| 6151159 | Optical amplifier for wavelength multiplex transmission | — | 2000-11-21 |
| 6144487 | Optical amplifying apparatus capable of detecting at least one of optical individual signals | — | 2000-11-07 |
| 6097534 | Optical amplifier system generating high optical output level | Satoshi Ishii | 2000-08-01 |
| 6064514 | Optical surge preventing method and system for use with or in a rare earth doped fiber circuit | Yasuhiro Aoki, Takaaki Ogata, Kenichi Yoneyama, Yoshiro Sato | 2000-05-16 |
| 5956166 | Wavelength division multiplexing optical transmission system and wavelength division multiplexing optical transmission method | Takaaki Ogata | 1999-09-21 |
| 5754325 | Optical regenerating circuit | — | 1998-05-19 |