Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6280608 | Layered catalyst composition and processes for preparing and using the composition | Robert H. Jensen, Qianjun Chen, Masaru Tatsushima, Kenji Kikuchi, Masao Takayama +3 more | 2001-08-28 |
| 6177601 | Isomer-selective aromatization process and catalyst | Paula L. Bogdan, Qianjun Chen, Jaime G. Moscoso | 2001-01-23 |
| 5770042 | Upgrading of cyclic naphthas | Leonid B. Galperin, Jennifer S. Holmgren | 1998-06-23 |
| 5593932 | Process for sweetening a sour hydrocarbon fraction using a mixture of a supported metal chelate and a solid base | Ralph D. Gillespie, Blaise J. Arena, Jennifer S. Holmgren | 1997-01-14 |
| 5529967 | Process for sweetening a sour hydrocarbon fraction using a supported metal chelate and a solid base | Ralph D. Gillespie, Blaise J. Arena, Jennifer S. Holmgren | 1996-06-25 |
| 5463155 | Upgrading of cyclic naphthas | Leonid B. Galperin, Jennifer S. Holmgren | 1995-10-31 |
| 5413704 | Process for sweetening a sour hydrocarbon fraction using a mixture of a supported metal chelate and a solid base | Ralph D. Gillespie, Blaise J. Arena, Jennifer S. Holmgren | 1995-05-09 |
| 5413701 | Process for sweetening a sour hydrocarbon fraction using a supported metal chelate and a solid base | Ralph D. Gillespie, Blaise J. Arena, Jennifer S. Holmgren | 1995-05-09 |
| 5273646 | Process for improving the activity of a mercaptan oxidation catalyst | Robert R. Frame, Laurence O. Stine, Thomas A. Verachtert | 1993-12-28 |
| 5233118 | Steam dehydrogenation process | Deng-Yang Jan, John M. Foresman | 1993-08-03 |
| 5204306 | Caustic free catalyst for use in a liquid/liquid process for sweetening a sour hydrocarbon fraction | Robert R. Frame, Laurence O. Stine, Thomas A. Verachtert | 1993-04-20 |
| 5180484 | Caustic free liquid/liquid process for sweeting a sour hydrocarbon fraction | Robert R. Frame, Laurence O. Stine, Thomas A. Verachtert | 1993-01-19 |
| 5093296 | Caustic free liquid/liquid process for sweetening a sour hydrocarbon fraction | Robert R. Frame, Laurence O. Stine, Thomas A. Verachtert | 1992-03-03 |
| 5064525 | Combined hydrogenolysis plus oxidation process for sweetening a sour hydrocarbon fraction | Robert R. Frame, Laurence O. Stine | 1991-11-12 |
| 5039398 | Elimination of caustic prewash in the fixed bed sweetening of high naphthenic acids hydrocarbons | Laurence O. Stine, Gregory J. Thompson, Thomas A. Verachtert | 1991-08-13 |
| 5034118 | Non-oxidative removal of hydrogen sulfide from gaseous, petrochemical, and other streams | Tamotsu Imai | 1991-07-23 |
| 5026937 | Aromatization of methane using zeolite incorporated in a phosphorus-containing alumina | — | 1991-06-25 |
| 4992157 | Process for improving the color and color stability of hydrocarbon fraction | Bryan Benedict, Sheila L. Pollastrini | 1991-02-12 |
| 4956324 | Catalyst containing dipolar compounds useful for sweetening a sour hydrocarbon fraction | Sheila L. Pollastrini, Robert R. Frame | 1990-09-11 |
| 4929340 | Catalyst and process for sweetening a sour hydrocarbon fraction using dipolar compounds | Sheila L. Pollastrini, Robert R. Frame | 1990-05-29 |
| 4923596 | Use of quaternary ammonium compounds in a liquid/liquid process for sweetening a sour hydrocarbon fraction | Robert R. Frame, Bryan Benedict, Sheila L. Pollastrini | 1990-05-08 |
| 4914075 | Dehydrogenation catalyst composition | Deng-Yang Jan, John M. Foresman | 1990-04-03 |
| 4913802 | Process for sweetening a sour hydrocarbon fraction | Laurence O. Stine, Thomas A. Verachtert | 1990-04-03 |
| 4908122 | Process for sweetening a sour hydrocarbon fraction | Robert R. Frame | 1990-03-13 |
| 4897175 | Process for improving the color and color stability of a hydrocarbon fraction | — | 1990-01-30 |