Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12297304 | Catalyst composition and method for preparing polyethylene | Graham R. Lief, Qing Yang | 2025-05-13 |
| 11993667 | Catalyst composition and method for preparing polyethylene | Graham R. Lief, Qing Yang | 2024-05-28 |
| 11761120 | High melt flow polypropylene homopolymers for fiber applications | Graham R. Lief | 2023-09-19 |
| 11186665 | Catalyst composition and method for preparing polyethylene | Graham R. Lief, Qing Yang | 2021-11-30 |
| 10927053 | Methods for the preparation and use of suspensions of chemically-treated solid oxides in an olefin-derived liquid medium | Graham R. Lief, Pasquale Iacono | 2021-02-23 |
| 10883197 | High melt flow polypropylene homopolymers for fiber applications | Graham R. Lief | 2021-01-05 |
| 10344106 | Process for reducing the light oligomer content of polypropylene oils | Graham R. Lief, Uriah J. Kilgore | 2019-07-09 |
| 10336663 | Methods for the preparation and use of suspensions of chemically-treated solid oxides in an olefin-derived liquid medium | Graham R. Lief, Pasquale Iacono | 2019-07-02 |
| 9951158 | Process for reducing the light oligomer content of polypropylene oils | Graham R. Lief, Uriah J. Kilgore | 2018-04-24 |
| 9732300 | Liquid propylene oligomers and methods of making same | Uriah J. Kilgore, Graham R. Lief | 2017-08-15 |