Inventor · disambiguated record
Graham R. Lief
Also filed as: LIEF GRAHAM R
20 granted patents·5 pending applications·17 citations·filing 2013–2025
91Inventor score
Top patents by PatentIndex Score
25 records- 0197US11667777B2Bimodal polyethylene copolymersCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2021·Granted Jun 6, 2023·4 cites·20 claims
- 0295US12351670B2Modifications of sulfated bentonites and uses thereof in metallocene catalyst systems for olefin polymerizationCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2024·Granted Jul 8, 2025·1 cites·12 claims
- 0395US11999814B2Modifications of sulfated bentonites and uses thereof in metallocene catalyst systems for olefin polymerizationCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2022·Granted Jun 4, 2024·1 cites·24 claims
- 0494US11186665B2Catalyst composition and method for preparing polyethyleneCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2019·Granted Nov 30, 2021·4 cites·6 claims
- 0591US12351657B2Controlling long-chain branch content with dual activator-supportsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2024·Granted Jul 8, 2025·0 cites·14 claims
- 0691US12297304B2Catalyst composition and method for preparing polyethyleneCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2024·Granted May 13, 2025·0 cites·26 claims
- 0788US11945938B2Bimodal polyethylene copolymersCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2023·Granted Apr 2, 2024·0 cites·20 claims
- 0888US9732300B2Liquid propylene oligomers and methods of making sameCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2015·Granted Aug 15, 2017·3 cites·25 claims
- 0984US10336663B2Methods for the preparation and use of suspensions of chemically-treated solid oxides in an olefin-derived liquid mediumCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2017·Granted Jul 2, 2019·2 cites·22 claims
- 1082US12122857B2Controlling long-chain branch content with dual activator-supportsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2021·Granted Oct 22, 2024·0 cites·21 claims
- 1180US11993667B2Catalyst composition and method for preparing polyethyleneCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2021·Granted May 28, 2024·0 cites·23 claims
- 1280US2025236692A1Catalyst composition and method for preparing polyethyleneCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2025·Application pending·0 cites
- 1377US9951158B2Process for reducing the light oligomer content of polypropylene oilsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2016·Granted Apr 24, 2018·1 cites·19 claims
- 1476US10883197B2High melt flow polypropylene homopolymers for fiber applicationsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2016·Granted Jan 5, 2021·1 cites·23 claims
- 1573US12043588B2Solid oxide and chemically-treated solid oxide catalysts for the production of polyalphaolefinsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2023·Granted Jul 23, 2024·0 cites·35 claims
- 1672US11761120B2High melt flow polypropylene homopolymers for fiber applicationsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2020·Granted Sep 19, 2023·0 cites·19 claims
- 1772US10927053B2Methods for the preparation and use of suspensions of chemically-treated solid oxides in an olefin-derived liquid mediumCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2019·Granted Feb 23, 2021·0 cites·23 claims
- 1869US2025011484A1Methods for preparing metallocene compoundsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2024·Application pending·0 cites
- 1968US2024218089A1Oligomerization of alpha olefins using supported metallocene catalysts in selective production of vinylidene dimersCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2023·Application pending·0 cites
- 2067US2024254065A1Method for the preparation of alkenyl halidesCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2024·Application pending·0 cites
- 2166US10344106B2Process for reducing the light oligomer content of polypropylene oilsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2018·Granted Jul 9, 2019·0 cites·20 claims
- 2260US9353202B2System and method for deterring fouling in a polymerization reactorCHEVRON PHILLIPS CHEMICAL CO·Filed 2015·Granted May 31, 2016·0 cites·4 claims
- 2360US9073029B2System and method for deterring fouling in a polymerization reactorCHEVRON PHILLIPS CHEMICAL CO·Filed 2013·Granted Jul 7, 2015·0 cites·24 claims
- 2459US11859041B2Modulating co-monomer selectivity using non-covalent dispersion interactions in group 4 olefin polymerization catalystsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2021·Granted Jan 2, 2024·0 cites·23 claims
- 2539US2018105478A1Process for Reducing the Light Oligomer Content of Polypropylene OilsCHEVRON PHILLIPS CHEMICAL CO LP·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →