Inventor · Krefeld, DE

Rolf Wehrmann

106Patents
15h-index
105Co-inventors
89Inventor score

Filing activity: Aug 1, 1989 → Nov 30, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US5194393A Optical biosensor and method of use Emerging Cross-Sectional Technologies 128 Expired
US5766515A Conductive coatings Emerging Cross-Sectional Technologies 111 Expired
US5917279A Intermediate layer in electroluminescent arrangements containing finely divided inorganic particles Emerging Cross-Sectional Technologies 68 Expired
US6083635A Conductive coatings Emerging Cross-Sectional Technologies 61 Expired
US6376105B1 Electroluminescent arrangements Emerging Cross-Sectional Technologies 58 Expired
US7358326B2 Multifunctional 3,4-alkylenedioxythiophene derivatives and electrically conductive polymers containing them Chemistry; Metallurgy 48 Expired
US6352791B1 Electron-conducting layer in organic electroluminescent arrangements Emerging Cross-Sectional Technologies 29 Expired
US6391481B1 Auxiliary layers for electroluminescent assemblies Emerging Cross-Sectional Technologies 28 Expired
US6157479A Electrochromic assembly based on poly(3,4-ethylenedioxythiophene) derivatives and a UV-stabilized gel electrolyte Physics 25 Expired
US7332560B2 Thermoplastic molding compositions having reduced water absorption Emerging Cross-Sectional Technologies 22 Expired
US5650456A Coumarin derivatives, a method of preparing them and their use as intermediates Chemistry; Metallurgy 20 Expired
US6327070A Electrochromic assembly based on poly(3,4-ethylenedioxythiophene) derivatives in combination with a lithium niobate counterelectrode Emerging Cross-Sectional Technologies 17 Expired
US6452711B1 Electro chromic assembly based on poly (3,4-ethylenedioxythiophene derivatives in the electrochromic layer and the ion-storage layer Physics 17 Expired
US6403741B1 UV-stabilized electrochromic assembly based on poly(3,4-ethylenedioxythiophene) derivatives Physics 17 Expired
US6175441A Electrochromic device based on poly-(3,4-dioxy-thiopene) derivatives Emerging Cross-Sectional Technologies 15 Expired
US6287713A Electroluminescent assemblies containing boron chelates Emerging Cross-Sectional Technologies 15 Expired
US6376107B1 Electroluminescent arrangement using doped blend systems Emerging Cross-Sectional Technologies 15 Expired
US6507428B1 Arrangement based on poly-(3,4-dioxythiophene) derivatives which are electrochromically switched with protons Electricity 14 Expired
US6586556B2 Use of copolycarbonates Emerging Cross-Sectional Technologies 14 Expired
US6584714B1 Fluorescent, structured shaped bodies Physics 14 Expired
US5308736A Dye-donor element for use according to thermal dye sublimation transfer Performing Operations; Transporting 14 Expired
US7425358B2 Copolycarbonates having improved flowability Chemistry; Metallurgy 13 Expired
US6316130A Electroluminescent assemblies using azomethine-metal complexes Emerging Cross-Sectional Technologies 13 Expired
US6577657B1 Plastic substrate for solid-state laser Electricity 13 Expired
US6248457A Copolymers based on vinyl units and use thereof in electroluminescent devices Emerging Cross-Sectional Technologies 13 Expired

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