Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6291600 | Method of preventing scale adhesion to the surfaces of a polymerization tank | Ichisaburo Nakamura, Yoshimatsu Naka, Keiichi Fukuda, Akira Yamamoto, Yasuyuki Hatakeyama +2 more | 2001-09-18 |
| 5789499 | Polymerization process of vinyl chloride in the presence of oxygen | Yoshihiro Umeda, Katsuhito Kohketsu, Ichisaburo Nakamura, Akihiko Takahashi | 1998-08-04 |
| 5728780 | Method of preventing scale adhesion to the surfaces of a polymerization tank and the like | Ichisaburo Nakamura, Yasuyuki Hatakeyama | 1998-03-17 |
| 5674954 | Method of preventing scale adhesion to the surfaces of a polymerization tank and the like | Ichisaburo Nakamura, Yoshimatsu Naka, Keiichi Fukuda, Akira Yamamoto, Yasuyuki Hatakeyama | 1997-10-07 |
| 5674953 | Method of preventing scale adhesion to surfaces of polymerization tank with phenol-aldehyde coating | Ichisaburo Nakamura, Keiichi Fukuda, Yasuyuki Hatakeyama, Akihiro Yamaguchi, Keizaburo Yamaguchi | 1997-10-07 |
| 5166271 | Heat resistant polyvinyl chloride copolymer and preparation process of the copolymer | Hideaki Takahara, Akira Yamamoto | 1992-11-24 |
| 5147948 | Method for polymerizing vinyl chloride while inhibiting adhesion to the polymerization reactor with coating from poly(hydricphenol sulfide) | Ichisaburo Nakamura, Keiichi Fukuda, Yasuyuki Hatakeyama, Akihiro Yamaguchi, Keizaburo Yamaguchi | 1992-09-15 |
| 4526656 | Monomeric vinyl chloride stripping tower | Hiroshi Okada, Hideyuki Itagaki, Takehiko Kano | 1985-07-02 |
| 4355141 | Polymerizing vinyl chloride in reactor treated with condensates | Hiroshi Okada, Kuniyuki Gotoh, Takehiko Mogi | 1982-10-19 |