Patent assignee · US · COMPANY

Evonik Corporation

42Patents
42Active
42Granted
56Portfolio score

Filing activity: Apr 12, 2004 → Nov 3, 2020 · 10 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US8728528B2 Process for preparing microparticles having a low residual solvent volume Human Necessities 130 Active
US8466228B2 Superabsorbent polymer with high permeability Chemistry; Metallurgy 12 Active
US8802786B2 Particulate superabsorbent polymer composition having improved performance properties Chemistry; Metallurgy 10 Active
US9440220B2 Superabsorbent polymer with crosslinker Emerging Cross-Sectional Technologies 10 Active
US8703645B2 Water-absorbing polysaccharide and method for producing the same Chemistry; Metallurgy 9 Active
US8962910B2 Superabsorbent polymer containing clay particulate, and method of making same Emerging Cross-Sectional Technologies 8 Active
US8822582B2 High permeability superabsorbent polymer compositions Chemistry; Metallurgy 7 Active
US9399018B2 Implant devices that differ by release profile and methods of making and using same Human Necessities 6 Active
US8541028B2 Methods for manufacturing delivery devices and devices thereof Human Necessities 4 Active
US8883881B2 Superabsorbent polymer with high permeability Chemistry; Metallurgy 4 Active
US8916196B2 Method for the production of emulsion-based microparticles Chemistry; Metallurgy 4 Active
US9504643B2 Compositions and methods for improved retention of a pharmaceutical composition at a local administration site Emerging Cross-Sectional Technologies 3 Active
US9375507B2 Particulate superabsorbent polymer composition having improved stability Chemistry; Metallurgy 3 Active
US9982184B2 Terpolymer compositions Chemistry; Metallurgy 3 Active
US8703843B2 Solvent extraction microencapsulation with tunable extraction rates Emerging Cross-Sectional Technologies 2 Active
US8758828B2 Process for preparing cyclic esters comprising unsaturated functional groups and polyesters prepared from same Chemistry; Metallurgy 2 Active
US9486416B2 Emulsion-based process for preparing microparticles and workhead assembly for use with same Performing Operations; Transporting 2 Active
US8871880B2 Superabsorbent copolymer Chemistry; Metallurgy 2 Active
US10865338B2 Organophilic clays and drilling fluids containing them Chemistry; Metallurgy 2 Active
US9216152B2 Injectable delivery of microparticles and compositions therefore Human Necessities 1 Active
US8871269B2 Method for the preparation of controlled release formulations Emerging Cross-Sectional Technologies 1 Active
US10307732B2 Particulate superabsorbent polymer composition having improved stability and fast absorption Chemistry; Metallurgy 1 Active
US8900636B2 Controlled release compositions Human Necessities 1 Active
US11865374B2 Functionalized polymers Human Necessities 0 Active
US11634621B2 Organophilic clays and drilling fluids containing them Chemistry; Metallurgy 0 Active

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