Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7247742 | Recycling polyethylene naphthalate containing materials in a process to produce diesters | Rosemary F. McMahon, John A. Macek, Michael Panzer, Raymond J. Eifert, David A. Young +2 more | 2007-07-24 |
| 5350874 | Process for preparing diesters of naphthalenedicarboxylic acids | Paul K. Behrens, Juergen K. Holzhauer, David L. Sikkenga | 1994-09-27 |
| 5041633 | Process for the production of an aromatic polycarboxylic acid | Walter Partenheimer, Juergen K. Holzhauer, Stephen V. Hoover | 1991-08-20 |
| 5030749 | Method for producing purified trimesic acid | — | 1991-07-09 |
| 4929761 | Preparation of substituted benzophenones | Carl A. Udovich | 1990-05-29 |
| 4900865 | Method for producing a di-(mono- or poly-)carboxyaryl ether | Juergen K. Holzhauer, George E. Kuhlmann | 1990-02-13 |
| 4898982 | Preparation of diaryl ethers and diaryl sulfides | — | 1990-02-06 |
| 4783569 | Selective gas-phase isomerization of dimethylnaphthalene: 2,6-DMN triad | Patrick E. Mc Mahon | 1988-11-08 |
| 4783570 | Selective gas-phase isomerization of dimethylnaphthalene: 2,7-DMN triad | Patrick E. McMahon | 1988-11-08 |
| 4754074 | Preparation of dialkyl ketones from aliphatic carboxylic acids | — | 1988-06-28 |
| 4740647 | Cyclization catalyst | Patrick E. McMahon | 1988-04-26 |
| 4721815 | Preparation of substituted benzophenones | Carl A. Udovich | 1988-01-26 |