| 6255525 |
Process for preparing purified carboxylic acids |
David L. Sikkenga, M. Michelle Morie-Bebel |
2001-07-03 |
| 5770764 |
Process for preparing purified aromatic polycarboxylic acids |
Martin A. Zeitlin, David L. Sikkenga, Paul K. Behrens |
1998-06-23 |
| 5728870 |
Process for preparing purified 2,6-naphthalenedicarboxylic acid |
Juergen K. Holzhauer, Rusins Albertins, David L. Sikkenga |
1998-03-17 |
| 5629446 |
Process for preparing purified 2,6-naphthalenedicarboxylic acid |
Juergen K. Holzhauer, Rusins Albertins, David L. Sikkenga |
1997-05-13 |
| 5563294 |
Process for preparing purified 2,6-naphthalenedicarboxylic acid |
Juergen K. Holzhauer, Rusins Albertins, David L. Sikkenga |
1996-10-08 |
| 5292934 |
Method for preparing aromatic carboxylic acids |
David L. Sikkenga, George E. Kuhlmann, Paul K. Behrens, Martin A. Zeitlin |
1994-03-08 |
| 5256817 |
Method for purifying a naphthalenedicarboxylic acid |
David L. Sikkenga |
1993-10-26 |
| 5041633 |
Process for the production of an aromatic polycarboxylic acid |
Walter Partenheimer, Gregory P. Hussmann, Juergen K. Holzhauer |
1991-08-20 |
| 4434244 |
Maleic anhydride catalyst recycle |
George E. Kuhlmann |
1984-02-28 |