Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7473664 | Formation of Ziegler-Natta catalyst | Kayo Vizzini, David Knoeppel, Steven D. Gray, David Rauscher, Henry Enriquez | 2009-01-06 |
| 7468339 | Diketonate complex-derived catalysts useful for preparing polyolefins | Steven D. Gray | 2008-12-23 |
| 7365138 | Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use | Steven D. Gray, Edwar S. Shamshoum, Hong Chen | 2008-04-29 |
| 7081285 | Polyethylene useful for blown films and blow molding | Vincent Barre, Ben Hicks, Rodolfo Mier, Jay Nguyen | 2006-07-25 |
| 7067451 | Soluble magnesium complexes useful for the production of polyolefin catalysts and catalysts prepared therewith | Steven D. Gray | 2006-06-27 |
| 6930137 | Method of improving blown film processing performance and physical properties | Michael McLeod, Nguong van Nguyen, Gerhard Guenther, Rodolfo Martinez | 2005-08-16 |
| 6930071 | Ziegler-natta catalyst for polyolefins | David Knoeppel, Henry Enriquez, Steven D. Gray | 2005-08-16 |
| 6916895 | Ziegler-Natta catalyst for tuning MWD of polyolefin, method of making, method of using, and polyolefins made therewith | Steven D. Gray | 2005-07-12 |
| 6864207 | Ziegler-Natta catalyst for polyolefins | David Knoeppel, Henry Enriquez, Steven D. Gray | 2005-03-08 |
| 6846887 | Polyolefin catalysts, production thereof and method of use | Steven D. Gray, Edwar S. Shamshoum, Hong Chen | 2005-01-25 |
| 6846859 | Polyolefin composition having reduced color bodies | Steven D. Gray, Gerhard Guenther | 2005-01-25 |
| 6790804 | Magnesium-diketonate complex derived polyolefin catalysts, method of making same, method of polymerizing with same | Steven D. Gray, Edwar S. Shamshoum | 2004-09-14 |
| 6734134 | Ziegler-natta catalyst for tuning MWD of polyolefin, method of making, method of using, and polyolefins made therewith | Steven D. Gray | 2004-05-11 |
| 6706822 | Method of producing polyethylene resins for use in blow molding | Gerhard Guenther, Lea Ann Nairn, Curt D. Clark, Ben Hicks, Ronald Tharappel | 2004-03-16 |
| 6693058 | Ziegler-natta catalyst for narrow to broad MWD of polyoefins, method of making, method of using, and polyolefins made therewith | Steven D. Gray | 2004-02-17 |
| 6486274 | Hydrogen response Ziegler-Natta catalyst for narrowing MWD of polyolefin, method of making, method of using, and polyolefins made therewith | Steven D. Gray | 2002-11-26 |
| 6433103 | Method of producing polyethylene resins for use in blow molding | Gerhard Guenther, Lea Ann Nairn, Curt D. Clark, Ben Hicks, Ronald Tharappel | 2002-08-13 |
| 6174971 | Ziegler-natta catalysts for olefin polymerization | Hong Chen, Edwar S. Shamshoum | 2001-01-16 |
| 5639900 | Thermally activated olefin metathesis catalyst precursor | Andrew Bell | 1997-06-17 |
| 5606085 | Thermally activated olefin metathesis catalyst precursor | Andrew Bell | 1997-02-25 |
| 5204420 | Grignard reagent as activator for polymerization of dicyclopentadiene | — | 1993-04-20 |