Inventor · Schifferstadt, DE

Volker Schehlmann

45Patents
14h-index
55Co-inventors
84Inventor score

Filing activity: Oct 26, 1995 → Aug 3, 2016

Most-cited inventions

PatentTitleAreaCited byStatus
US6524564B1 Urethane(meth)acrylates containing siloxane groups and able to undergo free-radical polymerization Chemistry; Metallurgy 71 Expired
US5945091A Photo-stable cosmetic and pharmaceutical formulations containing UV-filters Human Necessities 48 Expired
US6080811A Adhesives for dental prostheses Human Necessities 35 Expired
US6329472A Water-soluble or water-dispersible graft copolymers based on a polyvinyllactam, their preparation and use Chemistry; Metallurgy 33 Expired
US6482394B1 Propellantless pump sprays and pump foams containing an anionic copolymer of methacrylic acid and ethyl acrylate Human Necessities 29 Expired
US6277386A Cosmetic Human Necessities 28 Expired
US6238649A Cosmetic and pharmaceutical preparations containing photostable UV filters Human Necessities 27 Expired
US6143850A Lipophilic polymeric UV absorbers Chemistry; Metallurgy 25 Expired
US6107397A Aqueous copolymer dispersions of water-soluble monomers with N-vinyl groups and hydrophobic monomers Chemistry; Metallurgy 22 Expired
US6403074B1 Use of polymers containing polysiloxane for cosmetic formulations Human Necessities 22 Expired
US6545174B2 Cosmetic and pharmaceutical preparations containing photostable UV filters Human Necessities 20 Expired
US6075107A Use of copolymers of N-vinylprrolidone in preparations of water-insoluble substances Emerging Cross-Sectional Technologies 19 Expired
US7988953B2 UV absorbing chromophores covalently bonded to hyperbranched polymers Human Necessities 14 Active
US6416773B2 Cosmetic or dermatological light protection agent preparations Human Necessities 14 Expired
US6579517B1 Cosmetic product Human Necessities 13 Expired
US5897870A Aqeous or aqueous-alcoholic hair-cosmetic formulation Human Necessities 13 Expired
US6037487A Photo-stable cosmetic and pharmaceutical formulations containing UV-filters Human Necessities 13 Expired
US6489397B2 Crosslinked, water-soluble or water-dispersible polyurethanes Chemistry; Metallurgy 12 Expired
US6555124B1 Use of (meth)acrylic acid copolymers to increase the permeability of mucous membranes Human Necessities 12 Expired
US6132705A Cosmetic or pharmaceutical compositions for use on the skin Human Necessities 12 Expired
US6004575A Use of (meth) acrylic acid/maleic acid copolymers for improving mucosal permeability Human Necessities 12 Expired
US5968484A Cosmetic preparations comprising photostable UV-A filters Human Necessities 11 Expired
US6090374A Cosmetic and pharmaceutical preparations comprising photostable UV filters Human Necessities 11 Expired
US6407247B1 Photo-stable cosmetic and pharmaceutical formulations containing UV-filters Chemistry; Metallurgy 9 Expired
US5958390A Hairsetting compositions comprising polysiloxane Human Necessities 7 Expired

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