Issued Patents All Time
Showing 51–75 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5726264 | Processes to produce metallocene compounds and polymerization processes therewith | Michael E. Jung, M. Bruce Welch | 1998-03-10 |
| 5712404 | Cyclopentadienyl-type ligands, metallocene compounds catalyst systems, preparation and use | Bernd Peifer, M. Bruce Welch | 1998-01-27 |
| 5710224 | Method for producing polymer of ethylene | Syriac J. Palackal, M. Bruce Welch, David C. Rohlfing, Jay Janzen | 1998-01-20 |
| 5705578 | Method for making and using a supported metallocene catalyst system | Bernd Peifer, M. Bruce Welch | 1998-01-06 |
| 5670589 | Organoaluminoxy product, catalyst systems, preparation, and use | Rolf L. Geerts, M. Bruce Welch, Syriac J. Palackal, Bernd Peifer, Harold R. Deck | 1997-09-23 |
| 5668230 | Olefin polymerization | Peter Schertl, M. Bruce Welch | 1997-09-16 |
| 5654454 | Metallocene preparation and use | Bernd Peifer, M. Bruce Welch | 1997-08-05 |
| 5650528 | Metallocene compounds | Krisztina Frey, Gabriele von Massow, M. Bruce Welch | 1997-07-22 |
| 5646323 | Process for preparing metallocene compounds | Krisztina Frey, Gabriele von Massow, M. Bruce Welch | 1997-07-08 |
| 5637744 | Bis fluorenyl metallocenes and use thereof | Konstantinos Patsidis, M. Bruce Welch, Peter P. Chu | 1997-06-10 |
| 5631335 | Process of polymerizing olefins using diphenylsilyl or dimethyl tin bridged 1-methyl fluorenyl metallocenes | Konstantinos Patsidis, M. Bruce Welch, Peter P. Chu | 1997-05-20 |
| 5631203 | Metallocene compounds and preparation thereof containing terminal alkynes | M. Bruce Welch, Bernd Peifer | 1997-05-20 |
| 5627247 | Organometallic fluorenyl compounds and use thereof in olefin polymerization | Gil R. Hawley, Paul D. Smith, Syriac J. Palackal, Michael Schmid, M. Bruce Welch +4 more | 1997-05-06 |
| 5627118 | Silyl bridged metallocenes and use thereof | Syriac J. Palackal, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley, Peter P. Chu +2 more | 1997-05-06 |
| 5616752 | Metallocenes and processes therefor and therewith | Konstantinos Patsidis, Bernd Peifer, Rolf L. Geerts, Darryl R. Fahey, M. Bruce Welch +2 more | 1997-04-01 |
| 5610247 | Unbridged metallocenes of 9-substituted fluorenyl compounds and use thereof | Syriac J. Palackal, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Eric T. Hsieh +5 more | 1997-03-11 |
| 5591879 | Process for preparing cyclopentadienyl-type ligands | Krisztina Frey, Gabriele von Massow, M. Bruce Welch | 1997-01-07 |
| 5578741 | Process for preparing cyclopentadienyl-type ligands | Krisztina Frey, Gabriele von Massow, M. Bruce Welch | 1996-11-26 |
| 5571880 | Organometallic fluorenyl compounds and use thereof in an alpha-olefin polymerization process | Syriac J. Palackal, Roland Zenk, M. Bruce Welch, Michael Schmid | 1996-11-05 |
| 5565592 | Vinly-substituted bridged metallocenes | Konstantinos Patsidis, Bernd Peifer, Syriac J. Palackal, M. Bruce Welch, Rolf L. Geerts +2 more | 1996-10-15 |
| 5565396 | Catalyst systems and polymerization processes | Krisztina Frey, Gabriele von Massow, M. Bruce Welch | 1996-10-15 |
| 5563284 | Cyclopentadienyl-type ligands, metallocenes, catalyst systems, preparation, and use | Krisztina Frey, Gabriele von Massow, M. Bruce Welch | 1996-10-08 |
| 5554795 | Process for preparing cyclopentadienyl-type ligands | Krisztina Frey, Gabriele von Massow, M. Bruce Welch | 1996-09-10 |
| 5541272 | High activity ethylene selective metallocenes | Michael Schmid, M. Bruce Welch | 1996-07-30 |
| 5541351 | Cyclopentadiene type compounds and method for making | Konstantinos Patsidis, Syriac J. Palackal | 1996-07-30 |