Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278262 | Polymerization apparatus and batch-wise process for producing vinyl chloride resin | Kazuo Dairaku, Takekazu Maeda, Nobuki Toba, Hideyuki Kametani, Keizo Hayashi +2 more | 1994-01-11 |
| 5169918 | Polymerization apparatus having an effective height/effective inner diameter ratio of at least 4 and a circumferential agitative diameter/effective inner ratio diameter of from 0.7 to 0.9 | Kazuo Dairaku, Takekazu Maeda, Nobuki Toba, Hideyuki Kametani, Keizo Hayashi +2 more | 1992-12-08 |
| 5098993 | Method for removing alkali metal compound from crude high-molecular weight substance | Norio Kawanami, Yoshiaki Ikeda | 1992-03-24 |
| 4849482 | Process for suspension polymerization of vinyl chloride in a reactor equipped with a reflux condenser and a modified brumaging impeller | Teiji Kobayashi, Taizo Yamamoto, Yasuhiro Nojima | 1989-07-18 |
| 4771114 | Process for producing vinyl chlorine resin with nonionic surfactant and reflux condenser | Teiji Kobayashi, Taizo Yamamoto, Yasuhiro Nojima | 1988-09-13 |
| 4752640 | Temperature controlling method for polymerization reactors | Teiji Kobayashi, Kyosuke Kuratsune | 1988-06-21 |
| 4555555 | Process for polymerizing vinyl chloride with a scale prevention compound coated on a reaction surface | Eietsu Toyooka, Yasuhiro Nojima | 1985-11-26 |
| 4455413 | Method for suppressing bubbling in polymerization of vinyl chloride resin | Teiji Kobayashi, Hiroshi Shibahara, Yasuhiro Nojima | 1984-06-19 |