Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6051524 | Olefin polymerization and copolymerization catalyst | Steven A. Cohen, Julie L. Ledermann | 2000-04-18 |
| 5332707 | Olefin polymerization and copolymerization catalyst | Steven A. Cohen, Julie L. Ledermann | 1994-07-26 |
| 5227354 | Olefin polymerization and copolymerization catalyst | Steven A. Cohen, Julie L. Ledermann | 1993-07-13 |
| 5223466 | Olefin polymerization and copolymerization catalyst | Sam S. Lee | 1993-06-29 |
| 5218052 | Olefin polymerization and copolymerization process | Steven A. Cohen, Jerome A. Streeky, Benjamin S. Tovrog | 1993-06-08 |
| 5013702 | Olefin polymerization catalyst | Gregory G. Arzoumanidis, Habet M. Khelghatian, Sam S. Lee, Bryce V. Johnson | 1991-05-07 |
| 4988656 | Olefin polymerization catalyst | Gregory G. Arzoumanidis, Habet M. Khelghatian, Sam S. Lee, Bryce V. Johnson | 1991-01-29 |
| 4946816 | Morphology-controlled olefin polymerization catalyst | Steven A. Cohen, Gregory G. Arzoumanidis, Habet M. Khelghatian, Sam S. Lee | 1990-08-07 |
| 4866022 | Olefin polymerization catalyst | Gregory G. Arzoumanidis, Habet M. Khelghatian, Sam S. Lee, Bryce V. Johnson | 1989-09-12 |
| 4657882 | Supported olefin polymerization catalyst produced from a magnesium alkyl/organophosphoryl complex | John S. Skryantz, Bryce V. Johnson | 1987-04-14 |
| 4581342 | Supported olefin polymerization catalyst | Bryce V. Johnson, Charles R. Hoppin, Linda Ornellas | 1986-04-08 |
| 4526882 | Mixed ester retreated propylene polymerization catalyst | Bryce V. Johnson, John S. Skryantz | 1985-07-02 |
| 4431571 | Retreating comminuted olefin polymerization catalyst with a titanium(IV) compound, a haloalkylchlorosilane and an ester | — | 1984-02-14 |
| 4431572 | Retreating comminuted olefin polymerization catalyst with a titanium (IV) compound, a chlorocarbon and an ester | Bryce V. Johnson | 1984-02-14 |
| 4353813 | Catalyst for polymerization of alpha-olefins | John S. Skryantz | 1982-10-12 |
| 4324690 | Alpha-olefin polymerization catalyst | John S. Skryantz | 1982-04-13 |
| 4317898 | Catalyst and process for the polymerization of olefins | Sam S. Lee | 1982-03-02 |
| 4277370 | Alpha-olefin polymerization catalyst | John S. Skryantz | 1981-07-07 |
| 4276191 | Catalyst and process for polymerization of alpha-olefins | Harold Grams, John S. Skryantz | 1981-06-30 |
| 4258168 | Polymerization process | Sam S. Lee | 1981-03-24 |
| 4256866 | Polymerization process | Sam S. Lee | 1981-03-17 |
| 4222893 | Process for forming high performance titanium trichloride olefin polymerization catalyst components | Harold Grams | 1980-09-16 |
| 4189556 | Polymerization process | Sam S. Lee | 1980-02-19 |
| 4184987 | Stabilizing additives for polyolefins | Habet M. Khelghatian, John S. Skryantz | 1980-01-22 |