Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7022637 | Selective methylation catalyst, method of catalyst manufacture and methylation process | Chunshan Song, Jian-Ping Shen | 2006-04-04 |
| 5334796 | Alkylation of alkylaromatics promoted by amine compound | Anne M. Karachewski | 1994-08-02 |
| 5198594 | Alkylation of alkylaromatics promoted by sonicated alkali metal | Anne M. Karachewski | 1993-03-30 |
| 5175238 | Polyamide having improved gas barrier properties from adipic acid, isophthalic acid and m-xylylene diamine | John D. Matlack, James G. Villanueva, Bruce A. Newman, Melvin L. Luetkens, Jr., Gregory E. Schmidt | 1992-12-29 |
| 5028462 | Molded bottles and method of producing same | John D. Matlack, James G. Villanueva, Bruce A. Newman, Melvin L. Luetkens, Jr. | 1991-07-02 |
| 4754064 | Preparation of cyclohexane dicarboxylic acids | — | 1988-06-28 |
| 4739108 | Purification and esterification of methacrylic acid | — | 1988-04-19 |
| 4721808 | Process for purification of crude p-hydroxymethylbenzoic acid | Steven A. Cerefice | 1988-01-26 |
| 4448987 | Catalyzed hydrogenation of terephthalic acid to p-hydroxymethylbenzoic acid using a rhenium catalyst | — | 1984-05-15 |