Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828410 | Method for preparing poly(cyclohexane-1,4-dicarboxylate)s from cyclohexane-1,4-dicarboxylic acid, and composition | Corrado Berti, Annamaria Celli, Martino Colonna, Maurizio Fiorini, Elisabetta Marianucci +4 more | 2004-12-07 |
| 6790934 | Method for purification of aromatic polyethers | Norman Johnson, Raul Eduardo Ayala, Thomas Joseph Fyvie, Amy Rene Freshour, David Woodruff +7 more | 2004-09-14 |
| 6727370 | Method for preparing oxydiphthalic anhydrides using bicarbonate as catalyst | Qing Ye | 2004-04-27 |
| 6706897 | Method for preparing oxydiphthalic anhydrides using guanidinium salt as catalyst | Qing Ye | 2004-03-16 |