Issued Patents All Time
Showing 25 most recent of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7851644 | Heterocyclic metallocenes and polymerization catalysts | Michael J. Elder, Robert L. Jones, Yuri A. Dubitsky | 2010-12-14 |
| 7723450 | Transition metal compound, ligand system, catalyst system and process for preparing polyolefins | Robert L. Jones, Michael J. Elder, Jennifer Kipke, Alexander Koeppl, Markus Schopf | 2010-05-25 |
| 7544749 | Polymerization catalysts, organic transition metal compounds, process for preparing polyolefins and polyolefins | Robert L. Jones, Naka Seidel, Michael J. Elder | 2009-06-09 |
| 7504354 | Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and process for preparing polyolefins | Michael J. Elder, Robert L. Jones | 2009-03-17 |
| 7332456 | Alpha olefin catalyst systems | — | 2008-02-19 |
| 7238818 | Heterocyclic metallocenes and polymerization catalysts | Michael J. Elder, Robert L. Jones, Yuri A. Dubitsky | 2007-07-03 |
| 6872790 | Alpha olefin polymer products and catalyst systems | — | 2005-03-29 |
| 6649712 | Process for the polymerization of alpha olefins | — | 2003-11-18 |
| 6635779 | Metallocene compounds, process for their preparation and their use in catalytic systems for the polymerization of olefins | Michael J. Elder, Robert L. Jones | 2003-10-21 |
| 6444833 | Metallocene compounds, process for their preparation and their use in catalytic systems for the polymerization of olefins | Michael J. Elder, Robert L. Jones | 2002-09-03 |
| 6403772 | Open-pentadienyl metallocenes, precursors thereof and polymerization catalysts therefrom | Robert W. Strozier, Robert L. Jones, Michael J. Elder | 2002-06-11 |
| 6369175 | Process for producing hemiisotactic polypropylene | — | 2002-04-09 |
| 6344577 | Process for making silicon bridged metallocene compounds and metallocene catalysts | — | 2002-02-05 |
| 6262199 | Process and catalyst for producing isotactic polyolefins | Michael J. Elder, B. Raghava Reddy | 2001-07-17 |
| 6252019 | Process for polymerizing tactioselective polyolefins in condensed phase using hafnocenes | — | 2001-06-26 |
| 6184326 | Syndiotactic polypropylene | Abbas Razavi | 2001-02-06 |
| 6180732 | Stereospecific metallocene catalysts with stereolocking .alpha.-cp substituents | — | 2001-01-30 |
| 6160072 | Process for polymerizing tactioselective polyolefins in condensed phase using titanocenes | — | 2000-12-12 |
| 6117957 | Process for polymerization of olefins with silicon bridged metallocene catalyst systems | — | 2000-09-12 |
| 6069237 | Open-pentadienyl metallocenen ligands, polymerization catalysts/catalyst precursors and polymers therefrom | Robert W. Strozier | 2000-05-30 |
| 5883202 | Process for olefin polymerization using metallocene catalysts with Lewis acids and aluminum alkyls | Michael J. Elder | 1999-03-16 |
| 5846896 | Metallocene catalyst systems | — | 1998-12-08 |
| 5807939 | Polymerization of alpha-olefins with cationic metallocene catalysts based on organoaluminum anions | Michael J. Elder | 1998-09-15 |
| 5763549 | Cationic metallocene catalysts based on organoaluminum anions | Michael J. Elder | 1998-06-09 |
| 5710222 | Method for controlling the melting points and molecular weights of syndiotactic polyolefins using metallocene catalyst systems | B. Raghava Reddy, Michael J. Elder | 1998-01-20 |