Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8492583 | Process for purification of aromatic carboxylic acids | Philip O. Nubel, Muin S. Haddad, Jeffrey J. Foster | 2013-07-23 |
| 7135596 | Method of removing iron contaminants from liquid streams during the manufacture and/or purification of aromatic acids | Philip O. Nubel, Timothy H. Keyes | 2006-11-14 |
| 5362908 | Catalyst and method for purifying crude terephthalic acid, isophthalic acid or naphthalene dicarboxylic acid | Hobe Schroeder | 1994-11-08 |
| 4933492 | Purification of crude isophthalic acid | Hobe Schroeder | 1990-06-12 |
| 4808751 | Method for reactivating a group VIII noble metal catalyst for use in the purification of crude terephthalic acid | Hobe Schroeder | 1989-02-28 |
| 4743577 | Catalyst composition | Hobe Schroeder | 1988-05-10 |
| 4728630 | Rhodium on carbon catalyst | Hobe Schroeder | 1988-03-01 |