Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6479699 | Process for carboxylation of naphthoic acid to naphthalene dicarboxylic acid | Thomas F. Brownscombe, Donn A. DuBois, Susan Secor Pfrehm | 2002-11-12 |
| 6452045 | Process for improving yields in a disproportionation reaction (high yield Henkel) | Thomas F. Brownscombe, James Laurel Buechele, Donn A. DuBois, Susan Secor Pfrehm | 2002-09-17 |
| 6441224 | Process for carboxylation of naphthoic acid to naphthalene dicarboxylic acid | Thomas F. Brownscombe, Donn A. DuBois, Susan Secor Pfrehm | 2002-08-27 |
| 6355834 | Process for making an aromatic diacid in one step using a single catalyst system | Thomas F. Brownscombe, Susan Secor Pfrehm | 2002-03-12 |