Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6664418 | Method for inhibiting polymerization of a vinyl compound | Kazuhiko Sakamoto, Kazuo Ohkouchi, Masahiro Uemura, Sei Nakahara | 2003-12-16 |
| 6660881 | Process for producing (meth)acrylic ester | Hajime Matsumoto, Tetsuya Kajihara, Yasuhiro Shingai, Yukihiro Yoneda, Masahiro Uemura +2 more | 2003-12-09 |
| 6649028 | Column treating process and apparatus thereof | Kazuhiko Sakamoto, Sei Nakahara, Naoto Kasaya | 2003-11-18 |
| 6649787 | Method for preparing (meth) acrylic acid ester | Sei Nakahara | 2003-11-18 |
| 6540881 | Method for refining (meth)acrylic acid | Kazuhiko Sakamoto, Kouji Ueno, Sei Nakahara | 2003-04-01 |