Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7972563 | Alkylation system with catalyst transfer | Khalid Iqbal, Mark R. Cragun | 2011-07-05 |
| 7935320 | Alkylation process with recontacting in settler | Bruce B. Randolph | 2011-05-03 |
| 7906700 | Alkylation of isobutene feeds | Bruce B. Randolph, Kenneth C. Hoover | 2011-03-15 |
| 7842253 | Multi-zoned alkylation reactor with settler effluent recycle | Robert M. Gray | 2010-11-30 |
| 7803979 | Method for removing water from an alkylation process system | Robert M. Gray | 2010-09-28 |
| 7678957 | Alkylation process with catalyst transfer | Khalid Iqbal, Mark R. Cragun | 2010-03-16 |
| 7446238 | Alkylation process with recontacting in settler | Bruce B. Randolph | 2008-11-04 |
| 7371918 | Alkylation process with settler effluent recycle | Robert M. Gray | 2008-05-13 |
| 6451173 | Separator system | Richard L. Anderson | 2002-09-17 |
| 6245956 | Method for separating sulfone from a hydrocarbon stream having a small concentration of sulfone | Harold R. Hunt, Robert B. Eldridge | 2001-06-12 |
| 5767335 | Method for preventing the accumulation of light ASO in the alkylation catalyst of alkylation process system | Richard L. Anderson | 1998-06-16 |
| 5759937 | Method for regeneration of a hydrogen fluoride alkylation catalyst containing sulfone, water, and ASO | Richard L. Anderson | 1998-06-02 |
| 5753575 | Method for regenerating a hydrogen fluoride and sulfone alkylation catalyst | Richard L. Anderson, Bruce B. Randolph | 1998-05-19 |
| 5648587 | Method for separating sulfone from a hydrocarbon stream having a concentration of sulfone producing a dry sulfone product | Richard L. Anderson | 1997-07-15 |
| 5419873 | Apparatus for transfer of acid catalyst | Henry K. Hachmuth | 1995-05-30 |
| 5252295 | Control of HF alkylation propane stripper | Henry K. Hachmuth, Michael L. Gray | 1993-10-12 |
| 5209907 | Fluid flow control and isolation | — | 1993-05-11 |
| 5157195 | Control of HF alkylation propane stripper | Henry K. Hachmuth, Michael L. Gray | 1992-10-20 |
| 5146036 | Transfer of catalyst | — | 1992-09-08 |
| 5143703 | Fluid flow control and isolation | — | 1992-09-01 |
| 5021223 | Transfer of catalyst | — | 1991-06-04 |
| 4982036 | Transfer of acid catalyst | Henry K. Hachmuth | 1991-01-01 |
| 4962268 | Alkylation catalyst isolation | — | 1990-10-09 |
| 4854212 | Bowing guide for stringed instrument | Zaida Levin | 1989-08-08 |
| 4677244 | Catalytic alkylation process and apparatus | Henry K. Hachmuth | 1987-06-30 |