Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6646083 | Crosslinked polymers containing tertiary amine and/or quaternary ammonium salt structures, processes for making and uses thereof | Yoshiaki Hirano, Takehiko Morita, Hiroshi Yamamoto, Kenichi Takematsu, Yutaka Sugiyama | 2003-11-11 |
| 6541656 | Process for producing &agr;, &bgr;-unsaturated carboxylic acid esters and catalyst for use in such process | Keiji Yurugi | 2003-04-01 |