Inventor · Houston, TX, US

Charles J. Ruff

20Patents
9h-index
43Co-inventors
75Inventor score

Filing activity: Feb 9, 1996 → Apr 19, 2017

Most-cited inventions

PatentTitleAreaCited byStatus
US6114477A Polymerization process Emerging Cross-Sectional Technologies 50 Expired
US8426659B2 Vinyl terminated higher olefin polymers and methods to produce thereof Chemistry; Metallurgy 18 Active
US8399724B2 Vinyl terminated higher olefin copolymers and methods to produce thereof Emerging Cross-Sectional Technologies 16 Active
US9273163B2 Hydrosilation of vinyl-terminated macromonomers Chemistry; Metallurgy 16 Active
US8940839B2 Diblock copolymers prepared by cross metathesis Chemistry; Metallurgy 12 Active
US8841394B2 Vinyl terminated higher olefin copolymers and methods to produce thereof Emerging Cross-Sectional Technologies 12 Active
US9365788B2 Process to produce improved poly alpha olefin compositions Chemistry; Metallurgy 11 Active
US8841397B2 Vinyl terminated higher olefin polymers and methods to produce thereof Chemistry; Metallurgy 9 Active
US9796645B2 Poly alpha olefin compositions Chemistry; Metallurgy 9 Active
US9399746B2 Poly alpha olefin compositions Chemistry; Metallurgy 8 Active
US9234150B2 Low viscosity engine oil compositions Chemistry; Metallurgy 4 Active
US9657122B2 Ethylene-propylene copolymeric compositions with long methylene sequence lengths Chemistry; Metallurgy 4 Active
US9234152B2 High efficiency engine oil compositions Chemistry; Metallurgy 3 Active
US9382411B2 Propylene polymers Emerging Cross-Sectional Technologies 2 Active
US9234151B2 Lubricating compositions Chemistry; Metallurgy 2 Active
US9068034B2 In-reactor polymer blends Chemistry; Metallurgy 2 Active
US10100183B2 Propylene polymers Emerging Cross-Sectional Technologies 2 Active
US8288480B2 In-reactor polymer blends Chemistry; Metallurgy 1 Active
US10465022B2 Ethylene-propylene copolymeric compositions with long methylene sequence lengths Chemistry; Metallurgy 0 Active
US8809456B2 Polyolefin compositions and methods of production thereof Chemistry; Metallurgy 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.