Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6140534 | Method for purifying isophthalic acid prepared from metaxylene | Fu-Ming Lee, Randi W. Wytcherley | 2000-10-31 |
| 6113866 | Apparatus for preparing purified terephthalic acid | Fu-Ming Lee | 2000-09-05 |
| 6054610 | Method and apparatus for preparing purified terephthalic acid and isophthalic acid from mixed xylenes | Fu-Ming Lee, Randi W. Wytcherley | 2000-04-25 |
| 6013835 | Method and apparatus for preparing purified terephthalic acid | Fu-Ming Lee | 2000-01-11 |
| 5929274 | Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid | Fu-Ming Lee, Randi W. Wytcherley | 1999-07-27 |
| 5840968 | Method and apparatus for preparing purified terephthalic acid | Fu-Ming Lee | 1998-11-24 |
| 5492603 | Apparatus for recovering acetic acid from aqueous streams | Ronald G. Gualy, Joseph C. Gentry, Fernando Varela | 1996-02-20 |
| 5409579 | Method for recovering acetic acid from aqueous streams | Ronald G. Gualy, Joseph C. Gentry, Fernando Varela | 1995-04-25 |