Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6960552 | Decompositionally treating agent and decompositionally treating method for fluorocarbons | Kenji Otsuka, Tomohisa Ikeda, Koshi Ochi | 2005-11-01 |
| 6638489 | Cleaning process and cleaning agent for harmful gas | Kenji Otsuka, Yukichi Takamatsu, Kazuaki Tonari | 2003-10-28 |
| 6447576 | Cleaning agent and cleaning process of harmful gas | Kenji Otsuka, Yutaka Amijima, Ryuji Hasemi | 2002-09-10 |
| 5935540 | Cleaning process for harmful gas | Kenji Otsuka | 1999-08-10 |
| 5833882 | Detecting agent | Takashi Shimada | 1998-11-10 |
| 5756060 | Process for cleaning harmful gas | Kenji Otsuka, Satoshi Arakawa | 1998-05-26 |
| 5665313 | Detecting agent | Takashi Shimada, Masako Yamakawa | 1997-09-09 |