Inventor · Ravenna, OH, US

Stephen A. Charles

32Patents
10h-index
44Co-inventors
75Inventor score

Filing activity: Jan 17, 1985 → Feb 7, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US4997278A Biological sensors Physics 98 Expired
US5705583A Polymeric surface coatings Chemistry; Metallurgy 74 Expired
US4745077A Method of performing assay for analyte in liquid medium Emerging Cross-Sectional Technologies 71 Expired
US6087462A Polymeric surface coatings Chemistry; Metallurgy 46 Expired
US8846021B2 Acryloyloxyethylphosphorylcholine containing polymer conjugates and their preparation Chemistry; Metallurgy 41 Active
US5783650A Polymeric surface coatings Chemistry; Metallurgy 39 Expired
US5645883A Zwitterionic materials Chemistry; Metallurgy 18 Expired
US8765432B2 Targeted drug phosphorylcholine polymer conjugates Chemistry; Metallurgy 15 Active
US5798117A Method of reducing microorganism adhesion Human Necessities 13 Expired
US9840553B2 Dual PDGF/VEGF antagonists Chemistry; Metallurgy 13 Active
US10363290B2 Butyrylcholinesterase zwitterionic polymer conjugates Chemistry; Metallurgy 10 Active
US5717047A Materials Chemistry; Metallurgy 9 Expired
US10702608B2 Factor VIII zwitterionic polymer conjugates Chemistry; Metallurgy 9 Active
US5747347A Labelled carbohydrates and their use in assays Emerging Cross-Sectional Technologies 7 Expired
US11071771B2 Butyrylcholinesterase zwitterionic polymer conjugates Chemistry; Metallurgy 6 Active
US11155610B2 Dual PDGF/VEGF antagonists Chemistry; Metallurgy 6 Active
US7887789B2 Polymer derivatives having particular atom arrangements Chemistry; Metallurgy 6 Active
US7947261B2 Conjugates formed from polymer derivatives having particular atom arrangements Chemistry; Metallurgy 6 Active
US8633277B2 Methods for forming polymer-drug conjugates Chemistry; Metallurgy 5 Active
US9044516B2 Pharmaceutical compositions of conjugates formed from polymer derivatives having particular atom arrangements Chemistry; Metallurgy 4 Active
US11590235B2 Factor VIII zwitterionic polymer conjugates Chemistry; Metallurgy 4 Active
US9399070B2 Compositions comprising a polymeric reagent and a pharmacologically active agent Chemistry; Metallurgy 3 Active
US5556710A Metal coating useful for rendering the surface of the metal biocompatible Emerging Cross-Sectional Technologies 3 Expired
US9913913B2 Method for preparing a polymeric reagent Chemistry; Metallurgy 2 Active
US11819531B2 Multifunctional zwitterionic polymer conjugates Chemistry; Metallurgy 2 Active

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