Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7497943 | Additives to enhance metal and amine removal in refinery desalting processes | Tran M. Nguyen, Lawrence N. Kremer | 2009-03-03 |
| 7416654 | Method for improving liquid yield during thermal cracking of hydrocarbons | Joseph L. Stark, Thomas J. Falkler, Michael J. Zetlmeisl | 2008-08-26 |
| 6887447 | Hydrogen sulfide abatement in molten sulfur | John A. Schield, Weldon J. Cappel, Glenn L. Roof | 2005-05-03 |
| 6656445 | Hydrogen sulfide abatement in molten sulfur | John A. Schield, Weldon J. Cappel, Glenn L. Roof | 2003-12-02 |
| 6562086 | Fatty acid amide lubricity aids and related methods for improvement of lubricity of fuels | David R. Gentry, Mark P. Stehlin | 2003-05-13 |
| 6129772 | Composition and method to improve lubricity in fuels | Weldon J. Cappel, David R. Gentry, Andrew J. McCallum | 2000-10-10 |
| 6024866 | Method of scavenging hydrogen sulfide from hydrocarbons | Timothy J. O'Brien | 2000-02-15 |
| 6013175 | Quaternary ammonium hydroxides as mercaptan scavengers | David R. Gentry | 2000-01-11 |
| 5857287 | Methods and compositions for improvement of low temperature fluidity of fuel oils | John A. Schield | 1999-01-12 |
| 5840177 | Quaternary ammonium hydroxides as mercaptan scavengers | David R. Gentry | 1998-11-24 |
| 5567212 | Use of olefinic imines to scavenge sulfur species | David R. Gentry, Gerald T. Pancio | 1996-10-22 |
| 5567213 | Use of olefinic imines to scavenge sulfur species | David R. Gentry, Gerald T. Pancio | 1996-10-22 |
| 5284576 | Method of scavenging hydrogen sulfide from hydrocarbons | Timothy J. O'Brien | 1994-02-08 |
| 5266185 | Method of suppression of hydrogen sulfide with heterocyclic-amine aldehyde reaction products | Timothy J. O'Brien, Catherine E. Thomasson | 1993-11-30 |
| 5223127 | Hydrogen sulfide scavengers in fuels, hydrocarbons and water using amidines and polyamidines | Catherine E. Thomasson | 1993-06-29 |
| 5169411 | Suppression of the evolution of hydrogen sulfide gases from crude oil, petroleum residua and fuels | — | 1992-12-08 |
| 5074991 | Suppression of the evolution of hydrogen sulfide gases | — | 1991-12-24 |
| 5047069 | Antioxidants for liquid hydrocarbons | Thomas V. Bagwell | 1991-09-10 |
| 5035720 | Composition for inhibition of corrosion in fuel systems, and methods for use and preparation thereof | — | 1991-07-30 |
| 4978366 | Distillate fuels stabilized with diaminomethane and method thereof | — | 1990-12-18 |
| 4900427 | Antifoulant compositions and methods | Thomas J. Falkler, George G. Duggan, Robert J. Garrecht | 1990-02-13 |
| 4871374 | Fuel oils stabilized with imine-enamine condensates and method thereof | — | 1989-10-03 |