Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12384736 | Process and plant for preparing purified benzene composition from crude hydrocarbon stream containing benzene | Rahul Khandelwal | 2025-08-12 |
| 12338215 | Process and apparatus for preparing purified styrene composition using divided-wall column and crystallization unit | Rahul Khandelwal, Erik Temmel, Manfred Stepanski | 2025-06-24 |
| 12077497 | Process and apparatus for preparing purified styrene composition from styrene containing feedstock | Rahul Khandelwal, Randi W. Wytcherley, Kimberly Anderson, Meta Naulita-Ellis, Claudia Pudack +5 more | 2024-09-03 |
| 11919853 | Process and apparatus for preparing purified styrene composition from styrene containing feedstock | Rahul Khandelwal, Randi W. Wytcherley, Kimberly Anderson, Meta Naulita-Ellis, Claudia Pudack +5 more | 2024-03-05 |
| 11891358 | Process and apparatus for preparing purified styrene composition from styrene containing feedstock | Rahul Khandelwal, Randi W. Wytcherley, Kimberly Anderson, Meta Naulita-Ellis, Claudia Pudack +5 more | 2024-02-06 |
| 11161055 | Use of top dividing wall in isomerization unit | Manish Bhargava, Roomi Kalita | 2021-11-02 |
| 10653974 | Use of top dividing wall in isomerization unit | Manish Bhargava, Roomi Kalita | 2020-05-19 |
| 10500522 | Method of carrying out absorption/distillation in a single column design | Manish Bhargava | 2019-12-10 |
| 10308567 | Processes and systems for obtaining aromatics from catalytic cracking hydrocarbons | Weihua Jin, Zhongyi Ding, Mircea Cretoiu, Mark Lockhart, Calambur Shyamkumar +1 more | 2019-06-04 |
| 10266463 | Process for recovering isoprene from pyrolysis gasoline | Venkata K. Ramanujam, Michael McCaulley | 2019-04-23 |
| 10131595 | Process for production of xylenes through integration of methylation and transalkylation | Zhongyi Ding, Weihua Jin, Mircea Cretoiu | 2018-11-20 |
| 9370728 | Heavy hydrocarbon removal systems and methods | Mircea Cretoiu, Pradeep Pawar, Song Wang | 2016-06-21 |
| 8658820 | Catalyst systems for the production of acids | George A. Ball, Joseph P. Weller, Zhongyi Ding, John R. Wilson, Meritxell Guino +1 more | 2014-02-25 |
| 8455709 | Heavy hydrocarbon removal systems and methods | Mircea Cretoiu, Pradeep Pawar, Song Wang | 2013-06-04 |
| 6616831 | Aromatics separation process and method of retrofitting existing equipment for same | Fu-Ming Lee | 2003-09-09 |
| 6565742 | Aromatics separation process and method of retrofitting existing equipment for same | Fu-Ming Lee | 2003-05-20 |
| 6551502 | Process of removing sulfur compounds from gasoline | Fu-Ming Lee, Randi W. Wytcherley, Lucia Cretoiu, Calambur Shyamkumar | 2003-04-22 |
| 6375802 | Method of retrofitting existing equipment for an improved aromatics separation process | Fu-Ming Lee | 2002-04-23 |
| 5877385 | Process including extractive distillation and/or dehydrogenation to produce styrene from petroleum feedstock including ethyl-benzene/xylene mixtures | Fu-Ming Lee, Stephen G. Norwood | 1999-03-02 |
| 5849982 | Recovery of styrene from pyrolysis gasoline by extractive distillation | Fu-Ming Lee, Randi W. Wytcherley | 1998-12-15 |
| 5779993 | Liquid-phase catalyst-assembly for chemical process tower | — | 1998-07-14 |
| 5624566 | Method and apparatus for recovering carboxylic acids from dilute solutions | Randa W. Wytcherley, Ronald G. Gualy | 1997-04-29 |
| 5601797 | Liquid-phase catalyst-assembly for chemical process tower | — | 1997-02-11 |
| 5516955 | Catalytic distillation to produce orthoxylene and paraxylene | — | 1996-05-14 |
| 5492625 | Method of recovering carboxylic acids from dilute solutions | Randa W. Wytcherley, Ronald G. Gualy | 1996-02-20 |