Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8012231 | Particulate matter analyzer, collecting filter and system for analyzing and collecting samples from fluids | Katsumi Saitoh, Junji Kato, Masayoshi Shinohara | 2011-09-06 |
| 7254212 | Particulate matter analyzer, collecting filter and system for analyzing and collecting samples from fluids | Katsumi Saitoh, Junji Kato, Masayoshi Shinohara | 2007-08-07 |
| 7227642 | Absorbance monitor | Takuji Oida, Shigeyuki Akiyama, Masahiko Endo, Norikazu Iwata, Satoshi Inoue | 2007-06-05 |
| 6878339 | NOx-concentration measuring apparatus | Shigeyuki Akiyama, Satoshi Inoue | 2005-04-12 |
| 6477284 | Photo-electric combined substrate, optical waveguide and manufacturing process therefor | Mikio Oda, Sakae Kitajo, Yuzo Shimada, Masataka Itoh, Yoshinobu Kaneyama | 2002-11-05 |
| 6430327 | Optical module and manufacturing method thereof | Yoshinobu Kaneyama, Masataka Ito, Sakae Kitajo, Mikio Oda, Yuzo Shimada | 2002-08-06 |
| 5966676 | Calibration-inability warning method in analyzing apparatus | Kiyomi Shiotani | 1999-10-12 |
| 5904627 | Golf club shaft | Toshihiro Miyaji, Atsushi Takeda | 1999-05-18 |
| 5780716 | Gas analyzing apparatus | Naohito Shimizu, Shigeyuki Akiyama, Satoshi Inoue, Takuji Oida | 1998-07-14 |
| 5773828 | Gas analyzer | Shigeyuki Akiyama, Takuji Oida, Naohito Shimizu, Aritoshi Yoneda, Toshikazu Ohnishi | 1998-06-30 |
| 5693945 | Gas analyzer | Shigeyuki Akiyama, Fujio Koga, Naohito Shimizu, Toshihiko Uno, Aritoshi Yoneda | 1997-12-02 |
| 5572032 | Gas analyzer and gas-analyzing mechanism | Shigeyuki Akiyama, Masahiko Ishida, Satoshi Inoue | 1996-11-05 |
| 5471332 | Hitless switching apparatus and method for optical network | Tatsuya Shiragaki, Takahiro Shiozawa, Syuji Suzuki | 1995-11-28 |
| 5365344 | System for transmitting data using wavelength division multiplexing | Masahiro Eda | 1994-11-15 |
| 5255072 | Apparatus for analyzing fluid by multi-fluid modulation mode | Hajime Mikasa, Ichiro Asano, Nobutaka Kihara, Shuichi Ishimoto, Isao Fujita +5 more | 1993-10-19 |
| 5251275 | Tunable fiber Fabry-Perot etalon optical filter | Toshihide Kuriyama | 1993-10-05 |
| 5102806 | Method for analyzing fluid by multi-fluid modulation mode | Hajime Mikasa, Ichiro Asano, Nobutaka Kihara, Shuichi Ishimoto, Isao Fujita +5 more | 1992-04-07 |
| 4808825 | Fluid analyzer | Kimio Miyatake, Takao Imaki | 1989-02-28 |
| 4807227 | Optical wavelength-division switching system with coherent optical detection system | Minoru Shikada, Kazuhisa Kaede | 1989-02-21 |
| 4798435 | Optical switch circuit | Akira Ajisawa, Shuji Suzuki | 1989-01-17 |
| 4795241 | Device and method for providing optical bistability with free carrier recombination centers introduced into an optical guide surrounding semiconductor layer portion | Keiro Komatsu | 1989-01-03 |
| 4778235 | Optical switch | — | 1988-10-18 |