Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6495710 | Synthesis and use of dimethyl 1,5-naphthalenedicarboxlyates and intermediates therefrom | John A. Macek, Bruce I. Rosen, John S. Bramlet, Larry D. Lillwitz, David J. Schneider +5 more | 2002-12-17 |
| 6028211 | Composition and method for reducing fouling in process equipment used for manufacturing aromatic materials | Allen B. Mossman, David A. Young, Paul K. Behrens | 2000-02-22 |
| 5728870 | Process for preparing purified 2,6-naphthalenedicarboxylic acid | Rusins Albertins, Stephen V. Hoover, David L. Sikkenga | 1998-03-17 |
| 5629446 | Process for preparing purified 2,6-naphthalenedicarboxylic acid | Rusins Albertins, Stephen V. Hoover, David L. Sikkenga | 1997-05-13 |
| 5563294 | Process for preparing purified 2,6-naphthalenedicarboxylic acid | Rusins Albertins, Stephen V. Hoover, David L. Sikkenga | 1996-10-08 |
| 5350874 | Process for preparing diesters of naphthalenedicarboxylic acids | Paul K. Behrens, Gregory P. Hussmann, David L. Sikkenga | 1994-09-27 |
| 5342968 | Process for producing sulfonylbis (phthalic anhydride) | Stephen P. Brugge, Thomas E. Wolff | 1994-08-30 |
| 5262560 | Process for preparing purified dimethyl naphthalenedicarboxylate | David A. Young, Martin A. Zeitlin, Paul K. Behrens | 1993-11-16 |
| 5254719 | Process for preparing purified dimethyl naphthalenedicarboxylate | David A. Young | 1993-10-19 |
| 5101050 | Process for the production of aromatic anhydrides and aromatic esters with superior color properties | Chang-Man Park, Ronald Coates, John V. Peterson | 1992-03-31 |
| 5097066 | Process for purification of aromatic dicarboxylic acids | George E. Kuhlmann | 1992-03-17 |
| 5068406 | Compartmented oxidation method | Albert P. Brown, Aubrey C. Reeve | 1991-11-26 |
| 5041633 | Process for the production of an aromatic polycarboxylic acid | Walter Partenheimer, Gregory P. Hussmann, Stephen V. Hoover | 1991-08-20 |
| 4933491 | Method for purifying a crude naphthalene dicarboxylic acid | Rusins Albertins, Stephen J. Pietsch, Hobe Schroeder | 1990-06-12 |
| 4900865 | Method for producing a di-(mono- or poly-)carboxyaryl ether | Gregory P. Hussmann, George E. Kuhlmann | 1990-02-13 |
| 4886901 | Method for purifying a crude dimethyl naphthalene dicarboxylate | Robert D. Oltrogge, Dennis J. Michalak | 1989-12-12 |
| 4876386 | Process for the oxidation of di- or trimethylbenzenes in the presence of cobalt and manganese from oxidation residue incinerator ash | Dennis J. Michalak, Wayne P. Schammel | 1989-10-24 |
| 4786752 | Catalyst recovery and recycle of catalysts in pseudocument oxidation process | Wayne P. Schammel, Neal R. Nowicki | 1988-11-22 |
| 4786621 | Process for recovery of cobalt and manganese for oxidation residue incinerator ash | Dennis J. Michalak, Wayne P. Schammel | 1988-11-22 |
| 4754062 | Iron-enhanced selectivity of heavy metal-bromine catalysis in the oxidation of polyalkylaromatics | Wayne P. Schammel | 1988-06-28 |
| 4358600 | Process for the manufacture of maleic anhydride having improved age molten color | George E. Kuhlmann | 1982-11-09 |
| 4342699 | Process for production of maleic anhydride | David Aaron Palmer | 1982-08-03 |