Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4895978 | Oxidation of pseudocumene to trimellitic acid enhanced by low gram atom ratios of zirconium to transition metal in oxidation catalyst system | John K. Darin | 1990-01-23 |
| 4322549 | Oxidation of di- and trimethyl aromatic hydrocarbons having ortho-oriented methyl groups in liquid phthalic acid | George E. Kuhlmann | 1982-03-30 |
| 4299977 | Preparation of phthalic acid by solventless oxidation of liquid ortho-xylene | George E. Kuhlmann | 1981-11-10 |
| 4211881 | Preparation of phthalic acid by single step continuous air oxidation of liquid ortho-xylene | Sydney G. Horsfield, George E. Kuhlmann | 1980-07-08 |