Patent assignee · CN · COMPANY

CHINA PETROLEUM & CHEMICAL CORPORATION

673Patents
595Active
673Granted
61Portfolio score

Filing activity: May 18, 2001 → Apr 15, 2024 · 89 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US8871176B2 Process for reducing sulfur emission of sulfur plant Chemistry; Metallurgy 43 Active
US7491317B2 Desulfurization in turbulent fluid bed reactor Performing Operations; Transporting 41 Active
US9739141B2 Data transmission system and method for transmission of downhole measurement-while-drilling data to ground Fixed Constructions 35 Active
US7388061B2 Solid catalyst component for polymerization of olefins, catalyst comprising the same and use thereof Emerging Cross-Sectional Technologies 34 Expired
US7485595B2 Molecular sieve-containing catalyst for cracking hydrocarbons and a method for preparing the same Performing Operations; Transporting 32 Expired
US7158886B2 Automatic control system and method for bottom hole pressure in the underbalance drilling Fixed Constructions 31 Expired
US8529753B2 Combined process for hydrotreating and catalytic cracking of residue Chemistry; Metallurgy 31 Active
US6797669B2 Catalyst for selective hydrogenation, its preparation process and application Chemistry; Metallurgy 28 Expired
US9657236B2 Process for hydrotreating heavy raw oils Chemistry; Metallurgy 25 Active
US7361621B2 Magnesium halide/alcohol adduct, its preparation and use Performing Operations; Transporting 24 Expired
US7351778B2 Catalyst component for olefin polymerization and catalyst comprising the same Chemistry; Metallurgy 23 Expired
US7686942B2 Method for preparation of ethylene and propylene by catalytic cracking using a fluid-bed catalyst Emerging Cross-Sectional Technologies 17 Active
US8668894B2 Method for processing a sulfur-containing gas and a hydrogenation catalyst used therefor Emerging Cross-Sectional Technologies 14 Active
US7091289B2 Solid catalyst component for polymerization of ethylene, preparation thereof and a catalyst containing the same Chemistry; Metallurgy 14 Expired
US8084657B2 Integrated process for the production of P-xylene Emerging Cross-Sectional Technologies 14 Active
US7199071B2 Catalyst component for polymerization of olefins, catalyst containing the component and use of the same Chemistry; Metallurgy 13 Expired
US9068025B2 Catalyst component for polymerization of olefin and preparation method Chemistry; Metallurgy 13 Active
US7109389B2 Process for the disproportionation and transalkylation of toluene and heavy aromatics Chemistry; Metallurgy 13 Expired
US7923399B2 Zeolite-containing hydrocarbon-converting catalyst, the preparation process thereof, and a process for converting hydrocarbon oils with the catalyst Chemistry; Metallurgy 12 Active
US7332455B2 Catalyst component and catalyst for olefin polymerization as well as use thereof Chemistry; Metallurgy 12 Expired
US6713539B2 Storage-stable modified asphalt composition and its preparation process Chemistry; Metallurgy 12 Expired
US9598937B2 Rotating magnetic field downhole power generation device Mechanical Engineering; Lighting; Heating 11 Active
US7332562B2 Biodegradable linear random copolyester and process for preparing it and use of the same Emerging Cross-Sectional Technologies 11 Expired
US8268945B2 Catalyst component for ethylene polymerization, preparation thereof, and a catalyst comprising the catalyst component Chemistry; Metallurgy 11 Active
US7078580B2 Process for separating aromatics by extractive distillation and a composite solvent used therein Chemistry; Metallurgy 11 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.