Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6716403 | Method of recovering a cleaning agent | Takashi Shimada, Minoru Osugi, Kei Kawaguchi | 2004-04-06 |
| 6638489 | Cleaning process and cleaning agent for harmful gas | Yukichi Takamatsu, Youji Nawa, Kazuaki Tonari | 2003-10-28 |
| 6579509 | Method of cleaning of harmful gas and cleaning apparatus | Naoki Muranaga, Satoshi Arakawa, Tomohisa Ikeda | 2003-06-17 |
| 6447576 | Cleaning agent and cleaning process of harmful gas | Yutaka Amijima, Ryuji Hasemi, Youji Nawa | 2002-09-10 |
| 6429843 | Electro-optical device | Hongyong Zhang, Satoshi Teramoto | 2002-08-06 |
| 6331281 | Process and apparatus for cleaning exhaust gas | Suehachi Teru, Yasusada Miyano, Noboru Akita, Takashi Shimada | 2001-12-18 |
| 6325841 | Purifying agent and purification method for halogen-containing exhaust gas | Satoshi Arakawa, Ryuji Hasemi, Yutaka Amijima, Norihiro Suzuki | 2001-12-04 |
| 6261345 | Process and apparatus for recovering ammonia | Yasusada Miyano, Satoshi Arakawa | 2001-07-17 |
| 6175348 | Electro-optical device | Hongyong Zhang, Satoshi Teramoto | 2001-01-16 |
| 5956009 | Electro-optical device | Hongyong Zhang, Satoshi Teramoto | 1999-09-21 |
| 5935540 | Cleaning process for harmful gas | Youji Nawa | 1999-08-10 |
| 5895521 | Dust removing apparatus and dust removing method | Hiroshi Waki, Yoshio Yamashita, Satoshi Arakawa, Toshiya Hatakeyama | 1999-04-20 |
| 5882615 | Cleaning agent and cleaning process for harmful gas | Hideki Fukuda, Satoshi Arakawa | 1999-03-16 |
| 5756060 | Process for cleaning harmful gas | Satoshi Arakawa, Youji Nawa | 1998-05-26 |
| 5670445 | Cleaning agent of harmful gas and cleaning method | Koichi Kitahara, Toshiya Hatakeyama, Hideki Fukuda | 1997-09-23 |
| 5589148 | Process for purifying halogen-containing gas | Hideki Fukuda, Satoshi Arakawa | 1996-12-31 |
| 5489327 | Process for purifying hydrogen gas | Noboru Takemasa | 1996-02-06 |