Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8277254 | Dual wiring system | Masahiro Yamamoto, Takeshi Ueno, Kazufumi Oogi, Hideshi Hamaguchi | 2012-10-02 |
| 8238755 | Dual wiring system | Masahiro Yamamoto, Takeshi Ueno, Kazufumi Oogi, Hideshi Hamaguchi | 2012-08-07 |
| 8138636 | Function unit for dual wiring system | Masahiro Yamamoto, Takeshi Ueno, Kazufumi Oogi, Hideshi Hamaguchi | 2012-03-20 |
| 7994436 | Base unit for dual wiring system | Masahiro Yamamoto, Takeshi Ueno, Kazufumi Oogi, Hideshi Hamaguchi | 2011-08-09 |
| 7772717 | Dual wiring system | Tsunehiro Kitamura, Yoshihiro Tanikawa, Hiroaki Takeyama, Masahiro Yamamoto, Takeshi Ueno +2 more | 2010-08-10 |
| 7305714 | Anti-theft device for computer apparatus and a method for protecting computer apparatus thereby | Hideshi Hamaguchi, Kazufumi Ogi, Masahiro Yamamoto | 2007-12-04 |
| 6603587 | Optical amplifier repeater | Ryu Yokoyama, Shuji Yamashita, Yasuhiro Aoki | 2003-08-05 |
| 6600595 | Multi-stage optical amplifier apparatus having fiber grating with a cutoff wavelength less than the pump light wavelength | Ryuji Aida | 2003-07-29 |
| 6337936 | Optical amplifier, and method and apparatus for monitoring an optical fiber transmission path | — | 2002-01-08 |
| 6316062 | Magnetic recording medium and method of producing the same | Ryuji Sakaguchi, Kazuo Kobayashi, Hiroshi Sakai, Mikio Suzuki, Kazunori Ohnami | 2001-11-13 |
| 6301404 | Supervisory signal optical bypass circuit, optical amplifying repeater and supervisory system | — | 2001-10-09 |
| 6226090 | Light timing pulses generating method and light timing circuit | — | 2001-05-01 |
| 6149482 | Method for manufacturing flat plate with precise bulkhead, flat plate with precise bulkhead, method for manufacturing plasma display unit substrate and plasma display unit substrate | Kiyohiro Sakasegawa, Makoto Yoshida, Masashi Katoh, Yasuhiko Nishioka | 2000-11-21 |
| 6064514 | Optical surge preventing method and system for use with or in a rare earth doped fiber circuit | Yasuhiro Aoki, Takaaki Ogata, Yukio Michishita, Yoshiro Sato | 2000-05-16 |
| 5923453 | Apparatus for measuring optical transmission line property and optical wavelength multiplexing transmission apparatus | — | 1999-07-13 |
| 5894247 | Optical PLL circuit and method of controlling the same | Masanori Yoshida, Tohru Taura | 1999-04-13 |
| 5876281 | Pulse air jet generator | Kosuke Hirasawa, Kazuki Itakura, Taizo Shoji, Yoshihide ISOBE | 1999-03-02 |
| 5801877 | Optical fiber amplifier for superimposing a sub-signal | — | 1998-09-01 |
| 5801860 | Wavelength division multiplexing transmission system comprising a feedback section for transmitting a light power level signal from a light receiver to a light transmitter | — | 1998-09-01 |
| 5764396 | Optical regenerative circuit | — | 1998-06-09 |
| 5657154 | Monitoring system for all optical regenerators | — | 1997-08-12 |
| 5535037 | Optical repeater | — | 1996-07-09 |
| 5380781 | Cationically electrodepositable fine particles derived from alkoxysilane-modified epoxy resins and cationic electrodeposition paint composition comprising the same | Kiyoshi Kato, Haruo Nagaoka, Kenji Yamamoto, Kazuyuki Morimoto, Masafumi Kume | 1995-01-10 |
| 5299055 | Optical fiber amplifier circuit comprising a control circuit for controlling a plurality of excitation light sources | — | 1994-03-29 |
| 5295015 | Optical amplifying apparatus | — | 1994-03-15 |