Issued Patents All Time
Showing 51–64 of 64 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5492975 | Polymer bound metallocenes | Bernd Peifer, Helmut G. Alt, M. Bruce Welch | 1996-02-20 |
| 5492974 | Process for preparing polymer bound metallocenes | Bernd Peifer, Helmut G. Alt, M. Bruce Welch | 1996-02-20 |
| 5473020 | Polymer bound ligands, polymer bound metallocenes, catalyst systems, preparation, and use | Bernd Peifer, Helmut G. Alt, M. Bruce Welch | 1995-12-05 |
| 5466766 | Metallocenes and processes therefor and therewith | Konstantinos Patsidis, Bernd Peifer, Helmut G. Alt, M. Bruce Welch, Rolf L. Geerts +2 more | 1995-11-14 |
| 5459218 | Syndiotactic polypropylene prepared using silyl bridged metallocenes | Helmut G. Alt, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley, Peter P. Chu +2 more | 1995-10-17 |
| 5436305 | Organometallic fluorenyl compounds, preparation, and use | Helmut G. Alt, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Eric T. Hsieh +3 more | 1995-07-25 |
| 5420320 | Method for preparing cyclopentadienyl-type ligands and metallocene compounds | Roland Zenk, Helmut G. Alt, M. Bruce Welch | 1995-05-30 |
| 5406013 | Cyclopentadiene type compounds and method for making | Konstantinos Patsidis, Helmut G. Alt | 1995-04-11 |
| 5401817 | Olefin polymerization using silyl-bridged metallocenes | Helmut G. Alt, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley, Peter P. Chu +2 more | 1995-03-28 |
| 5399636 | Metallocenes and processes therefor and therewith | Helmut G. Alt, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Bernd Peifer | 1995-03-21 |
| 5393911 | Cyclopentadiene type compounds and method for making | Konstantinos Patsidis, Helmut G. Alt | 1995-02-28 |
| 5347026 | Fluorene compounds and methods for making | Konstantinos Patsidis, H. G. Alt | 1994-09-13 |
| 5210352 | Fluorene compounds | Helmut G. Alt | 1993-05-11 |
| 5191132 | Cyclopentadiene type compounds and method for making | Konstantinos Patsidis, Helmut G. Alt | 1993-03-02 |