Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11965859 | System and method for empirical estimation of life remaining in industrial equipment | John Jenkins, Michael Pedersen | 2024-04-23 |
| 5183933 | Process for preparing 2,6-naphthalene-dicarboxylic acid | George E. Kuhlmann, Keith D. Larson, Rosemary F. McMahon, Paul A. Sanchez | 1993-02-02 |
| 4827026 | Method for producing 5-t-butylisophthalic acid | Stephen P. Brugge, Larry W. Autry | 1989-05-02 |
| 4338464 | Removal of bromobutanone from acetic acid | Martin A. Zeitlin | 1982-07-06 |
| 4312778 | Membrane separation of catalyst metals from aromatic acid production | — | 1982-01-26 |
| 4312714 | Decreasing 3-bromo-2-butanone content of acetic acid | — | 1982-01-26 |
| 4311521 | Membrane separation of catalyst metals from trimellitic acid production and separation of cobalt from manganese | Stephen J. Pietsch | 1982-01-19 |
| 4309390 | Separation of cobalt and manganese from trimellitic acid process residue by extraction, pH adjustment, and magnet | Stephen J. Pietsch | 1982-01-05 |
| 4308240 | Recovery of cobalt and manganese from ash of residue from manufacture of trimellitic acid by acid extraction | Stephen J. Pietsch | 1981-12-29 |
| 4298580 | Separation of cobalt and manganese from trimellitic acid process residue by precipitating as carbonates, redissolving as halides and removing cobalt by magnetic means | Stephen J. Pietsch | 1981-11-03 |
| 4298759 | Separation of cobalt and manganese from trimellitic acid process residue by extraction, ion exchanger and magnet | Stephen J. Pietsch | 1981-11-03 |
| 4278503 | Low bromine content glacial acetic acid | Martin A. Zeitlin | 1981-07-14 |