Issued Patents All Time
Showing 26–50 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6291382 | Metallocenes, polymerization catalyst systems, their preparation, and use | Alexander Koppl, M. Bruce Welch | 2001-09-18 |
| 6268453 | Polymerization catalyst systems, their preparation, and use | Alexander Koppl, Syriac J. Palackal, M. Bruce Welch | 2001-07-31 |
| 6262201 | Aryl substituted metallocene catalysts and their use | M. Bruce Welch, Erik Licht | 2001-07-17 |
| 6221981 | Method for making and using a supported metallcene catalyst system | Michael E. Jung, Bryan E. Hauger, M. Bruce Welch, David W. Dockter, Syriac J. Palackal +1 more | 2001-04-24 |
| 6187880 | Process for producing an olefin polymer using a metallocene | M. Bruce Welch, Syriac J. Palackal, Bryan E. Hauger, David W. Dockter, Alexander Koppl | 2001-02-13 |
| 6162884 | Olefin oligomerization and processes thereof | Alexander Koppl | 2000-12-19 |
| 6162936 | Organometallic fluorenyl compounds, preparation, and use | Syriac J. Palackal, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Eric T. Hsieh +3 more | 2000-12-19 |
| 6159888 | Polymerization catalyst systems, their preparation, and use | M. Bruce Welch, Alexander Koppl | 2000-12-12 |
| 6153716 | Polyethylenes containing a unique distribution of short chain branching | M. Bruce Welch, Bernd Peifer, Syriac J. Palackal, Gary L. Glass, Ted M. Pettijohn +2 more | 2000-11-28 |
| 6124414 | Fluorenyl-containing polymeric metallocene catalyst systems | Bernd Peifer, Syriac J. Palackal, M. Bruce Welch, Peter Schertl | 2000-09-26 |
| 6087290 | Si-N-Si-bridged metallocenes, their production and use | Klaus Fottinger, M. Bruce Welch | 2000-07-11 |
| 6057410 | Polymeric ligands, polymeric metallocenes, catalyst systems, preparation, and use | Peter Schertl, Bernd Peifer, Syriac J. Palackal, M. Bruce Welch | 2000-05-02 |
| 6040402 | Polymeric ligands, polymeric metallocenes, catalyst systems, preparation, and use | Bernd Peifer, Syriac J. Palackal, M. Bruce Welch, Peter Schertl | 2000-03-21 |
| 6037427 | Polymerization with substituted indenyl cyclopentadienyl metallocenes | Claudia Schmid, M. Bruce Welch | 2000-03-14 |
| 5990035 | Polymerization catalyst systems, their preparation, and use | Alexander Koppl, Syriac J. Palackal, M. Bruce Welch | 1999-11-23 |
| 5932670 | Polymerization catalysts and processes therefor | Alexander Koppl | 1999-08-03 |
| 5886202 | Bridged fluorenyl/indenyl metallocenes and the use thereof | Michael E. Jung, M. Bruce Welch | 1999-03-23 |
| 5856547 | Organo omega-alkenyl cyclopentacarbyl silane compounds | Michael E. Jung, M. Bruce Welch | 1999-01-05 |
| 5854363 | (Omega-alkenyl) (cyclopentacarbyl) metallocene compounds | Michael E. Jung, M. Bruce Welch | 1998-12-29 |
| 5830958 | Polynuclear metallocene preparation and use | Bernd Peifer, M. Bruce Welch | 1998-11-03 |
| 5780659 | Substituted indenyl unbridged metallocenes | Claudia Schmid, M. Bruce Welch | 1998-07-14 |
| 5770663 | Metallocene preparation and use | Bernd Peifer, M. Bruce Welch | 1998-06-23 |
| 5770755 | Process to prepare polymeric metallocenes | Peter Schertl, Bernd Peifer, Syriac J. Palackal, M. Bruce Welch | 1998-06-23 |
| 5744666 | Process for preparing an alkynyl fulvene group containing compound and said compound | M. Bruce Welch, Bernd Peifer | 1998-04-28 |
| 5728908 | Process for preparing a bridged ligand and said bridged ligand | M. Bruce Welch, Bernd Peifer | 1998-03-17 |