Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6676809 | Process for removal of hydrogen fluoride | Takehide Tsuda, Takeo Matsumoto, Yoshinori Tanaka, Satoshi Koyama | 2004-01-13 |
| 6664337 | Method for stabilizing fluorine-containing polymer | Yoshiyuki Hiraga, Tomohisa Noda, Hiroyuki Imanishi | 2003-12-16 |
| 6615961 | Seal construction of shock absorber with leveling function | Yukio Hayakawa, Ryosuke Fujiya, Kiyoshi Nakahara | 2003-09-09 |
| 6581379 | Pressure intensifying apparatus for hydraulic cylinder | Kazushi Nomura, Hiroshi Kitamura | 2003-06-24 |
| 6451962 | Method of stabilizing fluorine-containing polymer | Yoshiyuki Hiraga, Tomohisa Noda, Yasuhiro Utsumi | 2002-09-17 |
| 6388033 | Process for preparing fluoropolymer | Tomohisa Noda | 2002-05-14 |
| 6311515 | Process for removal of hydrogen fluoride | Takehide Tsuda, Takeo Matsumoto, Yoshinori Tanaka, Satoshi Koyama | 2001-11-06 |
| 6268469 | Solid-liquid separation method of fluorine-containing polymer particles | Yoshiyuki Hiraga, Tomohisa Noda, Hiroyuki Imanishi | 2001-07-31 |
| 6180840 | Method of producing 1,1,1,2,2-pentafluoroethane a method of producing 2,-2,-diohloro-1,1,1-trifluorethane and a method of purifying 1,1,1,2 pentafluoroethane | Takashi Shibanuma, Yukio Homoto, Toshikazu Yoshimura | 2001-01-30 |
| 6177532 | Process for the polymerizing of flourine-containing olefin monomer | Katsuhide Otani, Yoshiki Maruya, Yoshiyuki Hiraga | 2001-01-23 |
| 6029510 | Rotary throttle position sensor | Takeo Nakaie, Keiichi Asai, Kazuyuki Tsujioka | 2000-02-29 |
| 5849963 | Method for producing difluoromethane and 1,1,1,2-tetrafluoroethane | Yukio Homoto, Kunitada Tanaka, Takashi Shibanuma, Satoshi Koyama | 1998-12-15 |
| 5847244 | Method of producing 1,1,1,2,2-pentafluoroethane, a method of producing 2,2-dichloro-1,1,1-trifluoroethane, and a method of purifying 1,1,1,2,2-pentafluoroethane | Takashi Shibanuma, Yukio Homoto, Toshikazu Yoshimura | 1998-12-08 |
| 5846388 | Azeotropic mixture of 1,1-difluoroethane and hydrogen fluoride and production process of 1,1-difluoroethane | Takehide Tsuda | 1998-12-08 |
| 5750809 | Methods of producing 1,1,1,2,2-pentafluoroethane | Takashi Shibanuma, Yukio Homoto, Toshikazu Yoshimura | 1998-05-12 |
| 5523015 | Azeotropes of hydrogen fluoride with dichloromethane, difluoromethane and chlorofluoromethane | Takehide Tsuda, Takeo Matsumoto, Yoshinori Tanaka, Satoshi Koyama | 1996-06-04 |
| 5426251 | Process for preparing 1,1,1-trifluoro-2-chloroethane and/or 1,1,1,2-tetrafluoroethane | Satoshi Koyama, Yoshinori Tanaka, Takehide Tsuda | 1995-06-20 |
| 5401430 | Azeotropic mixture of hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane | Takehide Tsuda, Nobuyoshi Iwashita, 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 | Takehide Tsuda, Nobuyoshi Iwashita, Satoshi Koyama | 1994-06-28 |