Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7834107 | Preparation of polyolefins having high molecular weights in the presence of an organic transition metal compound in a gas-phase fluidized-bed reactor | Rainer Karer, Ulrich Nieken | 2010-11-16 |
| 6992035 | Metallocenes, polymerization catalyst systems, their preparation, and use | M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, David W. Dockter, Helmut G. Alt | 2006-01-31 |
| 6509427 | Metallocenes, polymerization catalyst systems, their preparation, and use | M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, David W. Dockter, Helmut G. Alt | 2003-01-21 |
| 6482967 | Metallocenes, polymerization catalyst systems, their preparation, and use | Helmut G. Alt, M. Bruce Welch | 2002-11-19 |
| 6358876 | Organo-aluminum compounds immobilized on organopolysiloxane microgel particles | Helmut G. Alt, Frank Baumann, Johann Weis | 2002-03-19 |
| 6291382 | Metallocenes, polymerization catalyst systems, their preparation, and use | Helmut G. Alt, M. Bruce Welch | 2001-09-18 |
| 6268453 | Polymerization catalyst systems, their preparation, and use | Helmut G. Alt, Syriac J. Palackal, M. Bruce Welch | 2001-07-31 |
| 6187880 | Process for producing an olefin polymer using a metallocene | M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, David W. Dockter, Helmut G. Alt | 2001-02-13 |
| 6162884 | Olefin oligomerization and processes thereof | Helmut G. Alt | 2000-12-19 |
| 6159888 | Polymerization catalyst systems, their preparation, and use | M. Bruce Welch, Helmut G. Alt | 2000-12-12 |
| 5990035 | Polymerization catalyst systems, their preparation, and use | Helmut G. Alt, Syriac J. Palackal, M. Bruce Welch | 1999-11-23 |
| 5932670 | Polymerization catalysts and processes therefor | Helmut G. Alt | 1999-08-03 |