Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7687677 | Process for recovering thermal energy from a reactor effluent stream | Joseph E. Zimmermann, Douglas G. Stewart | 2010-03-30 |
| 7528290 | Apparatuses and methods for separating butene-1 from a mixed C4 feed | Joseph E. Zimmermann | 2009-05-05 |
| 7339088 | Alkylbenzene refining process and apparatus | Douglas G. Stewart, Bipin V. Vora | 2008-03-04 |
| 7267746 | Dividing wall distillation column control apparatus | James W. Harris, Steven P. Rosenblum, Michael A. Schultz, Douglas G. Stewart | 2007-09-11 |
| 6762334 | Alkylaromatic process with removal of aromatic byproducts using efficient distillation | Douglas G. Stewart | 2004-07-13 |
| 6483002 | Integrated fractional distillation for adsorptive separation process | — | 2002-11-19 |
| 6479720 | Alkylaromatic process using efficient prefractionation | Dennis H. Bielinski, Zhanping Xu | 2002-11-12 |
| 6417420 | Alkylaromatic process with removal of aromatic byproducts using efficient distillation | Douglas G. Stewart | 2002-07-09 |
| 6407303 | Isomerization process with adsorptive separation and integrated fractional distillation | Lynn H. Rice | 2002-06-18 |
| 6137021 | Conversion of an HF alkylation unit | Steven F. Eshelman | 2000-10-24 |
| 6069285 | Alkylaromatic process using a solid alkylation catalyst and a benzene rectifier | Thomas R. Fritsch, Steven F. Eshelman | 2000-05-30 |
| 5983476 | Conversion of an HF alkylation unit | Steven F. Eshelman | 1999-11-16 |
| 4568392 | Well treating fluid | Charles R. Dawson, Norman N. Li | 1986-02-04 |
| 4397354 | Method of using a well treating fluid | Charles R. Dawson, Norman N. Li | 1983-08-09 |
| 4384793 | Temperature profile monitoring method and apparatus | — | 1983-05-24 |
| 4381417 | Catalytic dehydrogenation process | Bipin V. Vora, Norman H. Scott | 1983-04-26 |
| 4381418 | Catalytic dehydrogenation process | Steve A. Gewartowski | 1983-04-26 |
| 4364821 | Fluid contacting process | — | 1982-12-21 |
| 4361658 | Process for polymeric gelation | Robert D. Lundberg, Henry S. Makowski, Robert R. Klein | 1982-11-30 |
| 4333817 | Separation of normally gaseous hydrocarbons from a catalytic reforming effluent and recovery of purified hydrogen | — | 1982-06-08 |
| 4322329 | Process for controlled gelation of polymeric solution (C-971) | Robert D. Lundberg, Henry S. Makowski, Robert R. Klein | 1982-03-30 |
| 4313862 | Process for gelation of polymeric solution (C-1042) | Robert D. Lundberg, Henry S. Makowski, Robert R. Klein | 1982-02-02 |
| 4307063 | Fluid contacting apparatus | — | 1981-12-22 |
| 4282130 | Process for controlled gelation of polymeric solution (C-669) | Robert D. Lundberg, Henry S. Makowski, Robert R. Klein | 1981-08-04 |
| 4183406 | Method of treating a borehole using gellable polymers | Robert D. Lundberg, Henry S. Makowski, Robert R. Klein | 1980-01-15 |