Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6676809 | Process for removal of hydrogen fluoride | Takeo Matsumoto, Yoshinori Tanaka, Satoshi Komatsu, Satoshi Koyama | 2004-01-13 |
| 6538165 | Process for producing difluoromethane and difluorochloromethane | Takashi Shibanuma | 2003-03-25 |
| 6407296 | Process for producing difluoromethane | Yasufu Yamada, Takashi Shibanuma | 2002-06-18 |
| 6375808 | Process for producing difluoromethane | Takashi Shibanuma, Yasufu Yamada | 2002-04-23 |
| 6346172 | Process for producing difluoromethane | Takashi Shibanuma | 2002-02-12 |
| 6311515 | Process for removal of hydrogen fluoride | Takeo Matsumoto, Yoshinori Tanaka, Satoshi Komatsu, Satoshi Koyama | 2001-11-06 |
| 6049016 | Process for producing pentafluoroethane and tetrafluorochloroethane | Toshikazu Yoshimura, Yukio Homoto, Yasufu Yamada, Takashi Shibanuma | 2000-04-11 |
| 6011185 | Process for producing pentafluoroethane and tetrafluorochloroethane | Toshikazu Yoshimura, Yukio Homoto, Yasufu Yamada, Takashi Shibanuma | 2000-01-04 |
| 5846388 | Azeotropic mixture of 1,1-difluoroethane and hydrogen fluoride and production process of 1,1-difluoroethane | Satoshi Komatsu | 1998-12-08 |
| 5744659 | Process for the preparation of difluoromethane | Yasufu Yamada, Takashi Shibanuma | 1998-04-28 |
| 5523015 | Azeotropes of hydrogen fluoride with dichloromethane, difluoromethane and chlorofluoromethane | Takeo Matsumoto, Yoshinori Tanaka, Satoshi Komatsu, Satoshi Koyama | 1996-06-04 |
| 5426251 | Process for preparing 1,1,1-trifluoro-2-chloroethane and/or 1,1,1,2-tetrafluoroethane | Satoshi Komatsu, Satoshi Koyama, Yoshinori Tanaka | 1995-06-20 |
| 5401430 | Azeotropic mixture of hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane | Nobuyoshi Iwashita, Satoshi Komatsu, Satoshi Koyama | 1995-03-28 |
| 5324873 | Azeotropic mixture of hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane and process for purification of 1,1,1-trifluoro-2-chloroethane | Nobuyoshi Iwashita, Satoshi Komatsu, Satoshi Koyama | 1994-06-28 |