Issued Patents All Time
Showing 26–50 of 102 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6600000 | Process for producing vinyl chloride polymer by means of a uniaxial eccentric screw pump | Makoto Ooura | 2003-07-29 |
| 6455646 | Polymerization of vinyl chloride with hydroxycarboxylic acids, inhibitors and Fe ions | Masahiro Usuki, Minoru Shigemitsu | 2002-09-24 |
| 6448372 | Process for producing vinyl chloride polymer with low residual monomer | Takashi Kobayashi, Ryuichi Saito, Yoshinori Nakahara, Ichiro Hara | 2002-09-10 |
| 6433074 | Process for producing vinyl chloride polymer | Makoto Ooura | 2002-08-13 |
| 6355743 | Process for producing vinyl chloride polymer in the presence of a chelating agent | Makoto Ooura, Kaname Inoue, Masakuni Yamamoto | 2002-03-12 |
| 6339132 | Process for regenerating unreacted vinyl chloride monomers recovered | Takashi Kobayashi, Fumiaki Adachi, Fujio Sato | 2002-01-15 |
| 6303712 | Process for producing vinyl chloride polymer | Kazuhiro Kumakura, Makoto Ooura | 2001-10-16 |
| 6288177 | Process for producing a vinyl chloride polymer in the presence of a chelating agent | Makoto Ooura | 2001-09-11 |
| 6242562 | Process for producing vinyl chloride polymer | Takashi Kobayashi | 2001-06-05 |
| 6037428 | Polymerization of vinyl chloride with peroxide mixtures | Ryuichi Saito | 2000-03-14 |
| 6022932 | Process for producing vinyl chloride polymer, with iron chelates in coated vessel | Makoto Ooura, Kaname Inoue, Masakuni Yamamoto | 2000-02-08 |
| 5925721 | Process for producing vinylidene fluoride resin | Ryuichi Saito | 1999-07-20 |
| 5908905 | Polymerization of vinyl chloride with t-butyl peroxyneoheptanoate and perester peroxide | Toshihiko Nakano | 1999-06-01 |
| 5883209 | Vinyl chloride polymerization with carboxylic acid ester of polyol and suspension agents | Toshihiko Nakano | 1999-03-16 |
| 5783647 | 1,1,2,2-tetramethylpropylperoxy esters and method for preparing vinyl polymers | Takashi Kobayashi, Hideshi Kurihara, Toshio Shinohara, Yoshitaka Okuno, Tohru Nishikawa | 1998-07-21 |
| 5763545 | Polymerization apparatus and a method for producing polymer using the same | Masatsugu Takano, Yoshihiko Hirai, Yoshitaka Okuno | 1998-06-09 |
| 5750079 | Polymerization apparatus of producing vinyl chloride type polymer | Takuya Ueda, Kikuo Nakajima, Yoichi Tanifuji, Shuji Ohnishi | 1998-05-12 |
| 5739222 | Process for preparing vinyl chloride polymer under specified vapor pressure | Takashi Kobayashi, Yoshitaka Okuno, Hideshi Kurihara, Tadaaki Kurokawa | 1998-04-14 |
| 5728857 | Silicon-containing peroxyesters | Takashi Kobayashi, Hideshi Kurihara, Tomohisa Suzuki, Toshio Shinohara, Tohru Nishikawa | 1998-03-17 |
| 5677403 | Process of producing vinyl chloride polymer with mercapto terminated polyvinylalcohol | Tadayoshi Hiyama | 1997-10-14 |
| 5618497 | Polymerization apparatus effective in preventing polymer scale deposition | Takuya Ueda, Yoshihiro Shirota, Yoshihiko Hirai, Toshiaki Maruyama | 1997-04-08 |
| 5612437 | Polymerization apparatus and method of producing vinyl chloride type polymer by using the same | Takuya Ueda, Kikuo Nakajima, Yoichi Tanifuji, Shuji Ohnishi | 1997-03-18 |
| 5612426 | Process of producing vinyl chloride polymer using an organic peroxide in combination with 3-hydroxy-1,1-dimethylbutyl peroxyneodecanoate | Toshihiko Nakano | 1997-03-18 |
| 5610245 | Polymerization method producing vinyl chloride polymer | Yasuhiro Takahashi, Yoshihiro Shirota | 1997-03-11 |
| 5597878 | Process of producing vinyl chloride polymer | Toshihiko Nakano | 1997-01-28 |