Issued Patents 1997
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |