Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8722165 | Polyethylene additive compositions and articles made from same | Elizabeth M. Lanier | 2014-05-13 |
| 7157511 | Phosphite additives in polyolefins | Rex L. Bobsein, William R. Coutant, John R. Rathman | 2007-01-02 |
| 6992035 | Metallocenes, polymerization catalyst systems, their preparation, and use | M. Bruce Welch, Syriac J. Palackal, David W. Dockter, Alexander Koppl, Helmut G. Alt | 2006-01-31 |
| 6509427 | Metallocenes, polymerization catalyst systems, their preparation, and use | M. Bruce Welch, Syriac J. Palackal, David W. Dockter, Alexander Koppl, Helmut G. Alt | 2003-01-21 |
| 6475947 | Oligomeric metallocenes and their use | Erik Licht, Helmut G. Alt, M. Bruce Welch | 2002-11-05 |
| 6458905 | Complexes of pyridldiimines with vanadium and other transition metals, and their use as olefin oligomerization and polymerization catalysts | Roland Schmidt, Ulrich Hammon, M. Bruce Welch, Helmut G. Alt, Ronald D. Knudsen | 2002-10-01 |
| 6384161 | Method and catalyst system for producing polyolefins with broadened molecular weight distributions | M. Bruce Welch, David W. Dockter, Syriac J. Palackal, David C. Rohlfing | 2002-05-07 |
| 6291608 | Polymerization catalyst system and polymerization process | Nancy W. Eilerts, M. Bruce Welch, Harold R. Deck | 2001-09-18 |
| 6239060 | Supported metallocene catalyst system and method for polymerizing olefins | David W. Dockter, M. Bruce Welch, Randall S. Muninger | 2001-05-29 |
| 6221981 | Method for making and using a supported metallcene catalyst system | Michael E. Jung, Helmut G. Alt, 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, David W. Dockter, Alexander Koppl, Helmut G. Alt | 2001-02-13 |