Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6869522 | Desulfurization process | Gyanesh P. Khare, Bryan W. Cass, Donald R. Engelbert, Edward L. Sughrue, II, Max W. Thompson | 2005-03-22 |
| 5426080 | Olefin polymerization | Ronald D. Kundsen, Gil R. Hawley, Randall A. Porter | 1995-06-20 |
| 5358921 | Selective removal of hydrogen sulfide over a zinc oxide and silica absorbing composition | Gary A. Delzer, Donald H. Kubicek, Paul F. Schubert | 1994-10-25 |
| 5338812 | Olefin polymerization | Ronald D. Knudsen, Gil R. Hawley, Randall A. Porter | 1994-08-16 |
| 5268152 | Sulfur absorbents and process for removing sulfur from fluid streams | Gary A. Delzer, Ted H. Cymbaluk, Gerhard P. Nowack | 1993-12-07 |
| 5250089 | Process for removing hydrogen sulfide from hydrocarbon gases using a cogelled hydrated zinc oxide-hydrated silica sorbent | Gary A. Delzer | 1993-10-05 |
| 5248489 | Selective removal of hydrogen sulfide over a zinc oxide and silica absorbing composition | Gary A. Delzer, Donald H. Kubicek, Paul F. Schubert | 1993-09-28 |
| 5245121 | Reduced leaching of heavy metals from incinerator ashes | James W. Gall, Ollie G. Buck | 1993-09-14 |
| 5178843 | Removal of hydrogen sulfide from fluid streams | Gary A. Delzer | 1993-01-12 |
| 5174919 | Sulfur absorbents and process for removing sulfur from fluid streams | Ted H. Cymbaluk, Gerhard P. Nowack, Gary A. Delzer | 1992-12-29 |
| 5151257 | Removal of hydrogen sulfide from fluid streams | — | 1992-09-29 |
| 5151401 | Preparation of dehydrogenating catalyst | Paul F. Schubert, Donald H. Kubicek | 1992-09-29 |
| 5130288 | Cogelled mixtures of hydrated zinc oxide and hydrated silica sulfur sorbents | Gary A. Delzer | 1992-07-14 |
| 5102854 | Adsorbent compositions for the removal of hydrogen sulfide from fluid streams | Gary A. Delzer | 1992-04-07 |
| 5094996 | Nickel-promoted absorbing compositions for selective removal of hydrogen sulfide | — | 1992-03-10 |
| 5045522 | Absorption composition comprising zinc titanate for removal of hydrogen sulfide from fluid streams | — | 1991-09-03 |
| 4990318 | Selective removal of hydrogen sulfide over a nickel-promoted absorbing composition | — | 1991-02-05 |
| RE33393 | Selective removal of hydrogen sulfide over zinc titanate and alumina | — | 1990-10-16 |
| 4888316 | Preparation of hydrotreating catalyst from spent catalyst | Lloyd E. Gardner | 1989-12-19 |
| 4758330 | Hydrotreating employing silica-modified alumina | — | 1988-07-19 |
| 4725415 | Selective removal of hydrogen sulfide over zinc titanate and alumina | — | 1988-02-16 |
| 4721696 | Silica-modified alumina and process for its preparation | — | 1988-01-26 |