Issued Patents All Time
Showing 26–50 of 119 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6291382 | Metallocenes, polymerization catalyst systems, their preparation, and use | Alexander Koppl, Helmut G. Alt | 2001-09-18 |
| 6268453 | Polymerization catalyst systems, their preparation, and use | Alexander Koppl, Helmut G. Alt, Syriac J. Palackal | 2001-07-31 |
| 6262201 | Aryl substituted metallocene catalysts and their use | Erik Licht, Helmut G. Alt | 2001-07-17 |
| 6248840 | Process to produce a composition | Ashish M. Sukhadia, William M. Whitte, Syriac J. Palackal, William R. Coutant | 2001-06-19 |
| 6239300 | Metallocene production process | Carleton E. Stouffer, Syriac J. Palackal, Gary L. Glass, John D. Hottovy, Michael D. Jensen | 2001-05-29 |
| 6239060 | Supported metallocene catalyst system and method for polymerizing olefins | David W. Dockter, Bryan E. Hauger, Randall S. Muninger | 2001-05-29 |
| 6232415 | Process to produce a monovinylaromatic/ monoolefin polymer and said monovinylaromatic/monoolefin polymer | Iqbal Ahmed, Jianxin Kuang, George A. Moczygemba, Syriac J. Palackal | 2001-05-15 |
| 6232414 | Process to make a monovinylaromatic polymer and said monovinylaromatic polymer | Iqbal Ahmed, Syriac J. Palackal, Jianxin Kuang, George A. Moczygemba | 2001-05-15 |
| 6221981 | Method for making and using a supported metallcene catalyst system | Michael E. Jung, Helmut G. Alt, Bryan E. Hauger, David W. Dockter, Syriac J. Palackal +1 more | 2001-04-24 |
| 6214469 | Films comprising metallocene catalyzed polyethylene | Ashish M. Sukhadia, David C. Rohlfing, Jay Janzen, Paul J. DesLauriers, Jim D. Byers +5 more | 2001-04-10 |
| 6197899 | Olefin polymerization | Kent E. Mitchell, Max P. McDaniel, Elizabeth A. Benham, Grover W. Cone | 2001-03-06 |
| 6187880 | Process for producing an olefin polymer using a metallocene | Syriac J. Palackal, Bryan E. Hauger, David W. Dockter, Alexander Koppl, Helmut G. Alt | 2001-02-13 |
| 6162936 | Organometallic fluorenyl compounds, preparation, and use | Helmut G. Alt, Syriac J. Palackal, Konstantinos Patsidis, Rolf L. Geerts, Eric T. Hsieh +3 more | 2000-12-19 |
| 6159888 | Polymerization catalyst systems, their preparation, and use | Alexander Koppl, Helmut G. Alt | 2000-12-12 |
| 6153716 | Polyethylenes containing a unique distribution of short chain branching | Helmut G. Alt, 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, Helmut G. Alt, Peter Schertl | 2000-09-26 |
| 6096915 | Processes to produce organo-aluminoxane compositions | Syriac J. Palackal, Rolf L. Geerts | 2000-08-01 |
| 6087290 | Si-N-Si-bridged metallocenes, their production and use | Klaus Fottinger, Helmut G. Alt | 2000-07-11 |
| 6057410 | Polymeric ligands, polymeric metallocenes, catalyst systems, preparation, and use | Helmut G. Alt, Peter Schertl, Bernd Peifer, Syriac J. Palackal | 2000-05-02 |
| 6040402 | Polymeric ligands, polymeric metallocenes, catalyst systems, preparation, and use | Bernd Peifer, Syriac J. Palackal, Helmut G. Alt, Peter Schertl | 2000-03-21 |
| 6037427 | Polymerization with substituted indenyl cyclopentadienyl metallocenes | Claudia Schmid, Helmut G. Alt | 2000-03-14 |
| 5990035 | Polymerization catalyst systems, their preparation, and use | Alexander Koppl, Helmut G. Alt, Syriac J. Palackal | 1999-11-23 |
| 5886202 | Bridged fluorenyl/indenyl metallocenes and the use thereof | Michael E. Jung, Helmut G. Alt | 1999-03-23 |
| 5856547 | Organo omega-alkenyl cyclopentacarbyl silane compounds | Michael E. Jung, Helmut G. Alt | 1999-01-05 |
| 5854363 | (Omega-alkenyl) (cyclopentacarbyl) metallocene compounds | Michael E. Jung, Helmut G. Alt | 1998-12-29 |