Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662589 | Integrated high pressure NGL recovery in the production of liquefied natural gas | Mark Julian Roberts | 2003-12-16 |
| 6560989 | Separation of hydrogen-hydrocarbon gas mixtures using closed-loop gas expander refrigeration | Mark Julian Roberts, Christopher F. Harris, Christopher Michael Ott, Daniel Lewis Longhurst, Brian Alfred McNeil | 2003-05-13 |
| 6487876 | Method for providing refrigeration to parallel heat exchangers | Lee J. Howard | 2002-12-03 |
| 6349566 | Dephlegmator system and process | Lee J. Howard, Randy James Nickel, Gene A. Lucadamo, Bruce M. Hill | 2002-02-26 |
| 6266977 | Nitrogen refrigerated process for the recovery of C2+ Hydrocarbons | Lee J. Howard, Mark Julian Roberts | 2001-07-31 |
| 5983665 | Production of refrigerated liquid methane | Lee J. Howard, Richard Alan Wright, Christopher F. Harris, Glenn E. Kinard, Robert Davis | 1999-11-16 |
| 5802871 | Dephlegmator process for nitrogen removal from natural gas | Lee J. Howard | 1998-09-08 |
| 5741350 | Recovery of hydrocarbons from polyalkene product purge gas | Lee J. Howard | 1998-04-21 |
| 5634354 | Olefin recovery from olefin-hydrogen mixtures | Lee J. Howard | 1997-06-03 |
| 5596883 | Light component stripping in plate-fin heat exchangers | Dennis P. Bernhard, Ramanathan R. Tarakad, John D. Bassett | 1997-01-28 |
| 5533437 | Recovery of hydrocarbons from polyalkene product purge gas | Lee J. Howard | 1996-07-09 |
| 5502972 | Mixed refrigerant cycle for ethylene recovery | Lee J. Howard | 1996-04-02 |
| 5497626 | Open loop mixed refrigerant cycle for ethylene recovery | Lee J. Howard | 1996-03-12 |
| 5379597 | Mixed refrigerant cycle for ethylene recovery | Lee J. Howard | 1995-01-10 |
| 5377490 | Open loop mixed refrigerant cycle for ethylene recovery | Lee J. Howard | 1995-01-03 |
| 5361589 | Precooling for ethylene recovery in dual demethanizer fractionation systems | Lee J. Howard | 1994-11-08 |
| 5287703 | Process for the recovery of C.sub.2 + or C.sub.3 + hydrocarbons | Dennis P. Bernhard, Michael Evans, Richard P. Freeman | 1994-02-22 |
| 4921514 | Mixed refrigerant/expander process for the recovery of C3+ hydrocarbons | Calvin L. Ayres | 1990-05-01 |
| 4749393 | Process for the recovery of hydrogen/heavy hydrocarbons from hydrogen-lean feed gases | Jeffrey A. Hopkins | 1988-06-07 |
| 4734115 | Low pressure process for C.sub.3.sup.+ liquids recovery from process product gas | Lee J. Howard | 1988-03-29 |
| 4732598 | Dephlegmator process for nitrogen rejection from natural gas | Ruth A. Davis | 1988-03-22 |
| 4720294 | Dephlegmator process for carbon dioxide-hydrocarbon distillation | Gene A. Lucadamo | 1988-01-19 |
| 4720293 | Process for the recovery and purification of ethylene | Kimberly Schroeder Grassi, Dennis P. Bernhard | 1988-01-19 |
| 4714487 | Process for recovery and purification of C.sub.3 -C.sub.4+ hydrocarbons using segregated phase separation and dephlegmation | — | 1987-12-22 |
| 4707170 | Staged multicomponent refrigerant cycle for a process for recovery of C.sub.+ hydrocarbons | Calvin L. Ayres | 1987-11-17 |