Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 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 |