Inventor · Leverkusen, DE

Stephan Kirchmeyer

38Patents
13h-index
59Co-inventors
84Inventor score

Filing activity: Jul 22, 1991 → Jan 8, 2013

Most-cited inventions

PatentTitleAreaCited byStatus
US7118690B2 Dispersible polymer powders Emerging Cross-Sectional Technologies 71 Expired
US7973180B2 Process for producing aqueous dispersion of composite of poly(3,4-dialkoxythiophene) with polyanion Emerging Cross-Sectional Technologies 52 Active
US6756473B2 Process for the preparation of neutral polyethylenedioxythiophene, and corresponding polyethylenedioxythiophenes Chemistry; Metallurgy 50 Expired
US7972534B2 Retarding oxidants for preparing conductive polymers Emerging Cross-Sectional Technologies 40 Expired
US7994345B2 Process for the purification of thiophenes Emerging Cross-Sectional Technologies 31 Active
US7053174B2 Polythiophenes Emerging Cross-Sectional Technologies 27 Expired
US7008562B2 Method of forming polythiophene dispersions Emerging Cross-Sectional Technologies 23 Expired
US5969002A Pigment preparations for inkjet printing Chemistry; Metallurgy 21 Expired
US8721929B2 Polythiophene polyanion complexes in homopolar organic solvents Emerging Cross-Sectional Technologies 17 Active
US6417312B1 Thermoplastic polyurethane elastomers Chemistry; Metallurgy 16 Expired
US7951901B2 Process for the production of polyethylene dioxythiophenes Chemistry; Metallurgy 16 Active
US5266405A Thermosetting compositions for the production of liquid-crystalline epoxide networks, a process for their preparation and their use Emerging Cross-Sectional Technologies 14 Expired
US5340879A Polymer resins and use thereof Chemistry; Metallurgy 14 Expired
US5547711A Self-crosslinking preparations, production and use thereof Chemistry; Metallurgy 13 Expired
US8592520B2 Aqueous dispersion containing a complex of poly(3,4-dialkoxythiophene) and a polyanion and method for producing the same Emerging Cross-Sectional Technologies 11 Expired
US7199251B2 Process for the production of linear organic thiophene-phenylene oligomers Emerging Cross-Sectional Technologies 11 Expired
US5426205A Perfluoroalkylsulphonamidoalkoxysilanes Textiles; Paper 8 Expired
US5910556A Dispersing agents for aqueous coatings compositions Chemistry; Metallurgy 7 Expired
US5254660A Polyisocyanate solutions useful for impregnating porous inorganic substrates Emerging Cross-Sectional Technologies 7 Expired
US5811480A Size composition, sized glass fibers and use thereof Emerging Cross-Sectional Technologies 7 Expired
US6284834A Aqueous preparation treatment of mineral building materials Chemistry; Metallurgy 7 Expired
US5672673A Fluorine-containing dispersants for aqueous paints and coating compositions Chemistry; Metallurgy 7 Expired
US5739252A Thermoplastic polyurethaneurea elastomers Chemistry; Metallurgy 6 Expired
US5900454A Aqueous dispersions, process for the production thereof and use thereof Emerging Cross-Sectional Technologies 5 Expired
US6833182B2 Size compositions, sized glass fibers and their use Emerging Cross-Sectional Technologies 4 Expired

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