Issued Patents All Time
Showing 26–50 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7556784 | Optimized production of aromatic dicarboxylic acids | Marcel de Vreede | 2009-07-07 |
| 7546747 | Process for production of a dried carboxylic acid cake suitable for use in polyester production | Kenny Randolph Parker, Philip Edward Gibson | 2009-06-16 |
| 7504535 | Optimized liquid-phase oxidation | Marcel de Vreede, Alan George Wonders | 2009-03-17 |
| 7494641 | Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid | Marcel de Vreede | 2009-02-24 |
| 7470370 | Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration | Kenny Randolph Parker | 2008-12-30 |
| 7452522 | Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid | Marcel de Vreede | 2008-11-18 |
| 7410632 | Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid | — | 2008-08-12 |
| 7402694 | Process for removal of benzoic acid from an oxidizer purge stream | Philip Edward Gibson, Kenny Randolph Parker | 2008-07-22 |
| 7393973 | Polycarboxylic acid production system with enhanced residence time distribution for oxidative digestion | Ruairi Seosamh O'Meadhra, Alan George Wonders, Thomas Michael Pell, Jr. | 2008-07-01 |
| 7381386 | Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid | Marcel de Vreede | 2008-06-03 |
| 7358392 | Process for the oxidative purification of terephthalic acid | Ronald Buford Sheppard, Brent Alan Tennant, Thomas Earl Woodruff, Ruairi Seosamh O'Meadhra | 2008-04-15 |
| 7351396 | Extraction process for removal of impurities from an aqueous mixture | Marcel de Vreede | 2008-04-01 |
| 7342128 | Method for oxidizing a slurry composition in a post oxidation zone in the presence of added steam | Marcel de Vreede, Johannes Wilhelmus Sluijmers, Martin De Boer, Thomas Earl Woodruff | 2008-03-11 |
| 7339072 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production | — | 2008-03-04 |
| 7326807 | Polycarboxylic acid production system with enhanced heating for oxidative digestion | Alan George Wonders, Leigh A. Alexander, Thomas Michael Pell, Jr. | 2008-02-05 |
| 7282151 | Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration | Kenny Randolph Parker | 2007-10-16 |
| 7276625 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production | — | 2007-10-02 |
| 7226986 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production | Timothy Alan Upshaw, Duane Alan Hall, Kenny Randolph Parker | 2007-06-05 |
| 7214760 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production | Kenny Randolph Parker, Philip Edward Gibson | 2007-05-08 |
| 7213540 | Steam recompression in carboxylic acid processes | Steven Paul Bellner | 2007-05-08 |
| 7196215 | Process for the production of purified terephthalic acid | Ruairi Seosamh O'Meadhra, Ronald Buford Sheppard | 2007-03-27 |
| 7193109 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production | Timothy Alan Upshaw, Duane Alan Hall, Kenny Randolph Parker | 2007-03-20 |
| 7161027 | Process for the oxidative purification of terephthalic acid | Ronald Buford Sheppard, Brent Alan Tennant, Thomas Earl Woodruff | 2007-01-09 |
| 7132566 | Process for the purification of a crude carboxylic acid slurry | Charles Edwan Sumner, Jr., Philip Edward Gibson, Eric J. Fugate, Ernest Arnold | 2006-11-07 |
| 7074954 | Process for the oxidative purification of terephthalic acid | Ronald Buford Sheppard, Brent Alan Tennant, Thomas Earl Woodruff | 2006-07-11 |