Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9962980 | Thermosensitive recording material | Masahiro Morie, Takehiro Minami, Toshizo Yamamoto, Kazuyuki Sakamoto, Masaharu Nojima | 2018-05-08 |
| 9789721 | Thermosensitive recording medium | Suguru Takano, Naotaka Endo, Kazuyuki Sakamoto | 2017-10-17 |
| 9656498 | Heat-sensitive recording body | Naotaka Endo, Hiroyuki Kido, Kazuyuki Sakamoto | 2017-05-23 |
| 7542677 | Dispersion compensation method in optical communication system having optical add drop multiplexing capability | Motoyoshi Sekiya, Ryosuke Goto, Satoru Okano, Takehito Okeno | 2009-06-02 |
| 7397981 | Apparatus and method of compensating for wavelength dispersion of optical transmission line | Shinya Inagaki, Hisashi Takamatsu, Takashi Tsuda | 2008-07-08 |
| 7376361 | Optical transmission system and dispersion compensator | Akira Miyauchi, Yumiko Kawasaki, Satoru Okano | 2008-05-20 |
| 7274878 | Dispersion compensation method in optical communication system having optical add drop multiplexing capability | Motoyoshi Sekiya, Ryosuke Goto, Satoru Okano, Takehito Okeno | 2007-09-25 |
| 7263296 | Optical transmission system using in-line amplifiers | Akira Miyauchi, Yumiko Kawasaki, Satoru Okano | 2007-08-28 |
| 7116918 | Optical transmission system using in-line amplifiers | Akira Miyauchi, Yumiko Kawasaki, Satoru Okano | 2006-10-03 |
| 7116913 | Optical transmission system and dispersion compensator | Akira Miyauchi, Yumiko Kawasaki, Satoru Okano | 2006-10-03 |
| 7079771 | Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus | Takashi Tsuda, Yumiko Kawasaki, Satoru Okano | 2006-07-18 |
| 7068876 | Method and system for optical transmission adopting dispersion compensation | Takashi Tsuda, Yumiko Kawasaki, Satoru Okano | 2006-06-27 |
| 7006769 | Method for optical fiber communication, and device and system for use in carrying out the method | Yumiko Kawasaki, Takashi Tsuda, Satoru Okano | 2006-02-28 |
| 6839160 | Method of activating optical communication system, channel increasing/decreasing method, and computer-readable recording medium | Takashi Tsuda, Makoto Murakami, Tooru Shima, Tooru Matsumoto, Hiroyuki Iwaki +1 more | 2005-01-04 |
| 6823141 | Optical transmission system and dispersion compensator | Akira Miyauchi, Yumiko Kawasaki, Satoru Okano | 2004-11-23 |
| 6760150 | Optical transmitting apparatus and an optical transmitting system | Ryosuke Goto, Taizo Maeda | 2004-07-06 |
| 6744958 | Apparatus and method of compensating for wavelength dispersion of optical transmission line | Shinya Inagaki, Hisashi Takamatsu, Takashi Tsuda | 2004-06-01 |
| 6738584 | Method for optical fiber communication, and terminal device and system for use in carrying out the method | Takashi Tsuda, Yumiko Kawasaki, Satoru Okano | 2004-05-18 |
| 6654561 | Method and apparatus for measuring optical signal-to-noise ratio, and pre-emphasis method and optical communication system each utilizing the method | Takafumi Terahara, Takeshi Sakamoto, Hiroaki Tomofuji, Motoyoshi Sekiya, Makoto Murakami +1 more | 2003-11-25 |
| 6570691 | Optical transmission system using in-line amplifiers | Akira Miyauchi, Yumiko Kawasaki, Satoru Okano | 2003-05-27 |
| 6570703 | Optical amplifying apparatus, optical amplifying method, and optical communication system | Makoto Murakami, Motoyoshi Sekiya, Hideto Saito, Hiroaki Tomofuji, Takeshi Sakamoto | 2003-05-27 |
| 6496288 | Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus | Takashi Tsuda, Yumiko Kawasaki, Satoru Okano | 2002-12-17 |
| 6449074 | Optical transmission device and optical communication system | Satoru Okano, Hiroshi Nishimoto, Takashi Tsuda, Yumiko Kawasaki | 2002-09-10 |
| 6295147 | Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus | Takashi Tsuda, Yumiko Kawasaki, Satoru Okano | 2001-09-25 |
| 6288836 | Optical amplifier and optical communication system having the optical amplifier | Yumiko Kawasaki, Satoru Okano, Hiroshi Nishimoto, Takashi Tsuda | 2001-09-11 |