Inventor · Yokohama, JP

Yoshio Sugaya

19Patents
11h-index
27Co-inventors
72Inventor score

Filing activity: Nov 8, 1976 → Jul 30, 2002

Most-cited inventions

PatentTitleAreaCited byStatus
US4385150A Organic solution of fluorinated copolymer having carboxylic acid groups Chemistry; Metallurgy 76 Expired
US4909810A Vapor permselective membrane Chemistry; Metallurgy 57 Expired
US5039382A Method for producing an alkali metal hydroxide Chemistry; Metallurgy 33 Expired
US4604170A Multi-layered diaphragm for electrolysis Chemistry; Metallurgy 30 Expired
US5180750A Anion exchanger Chemistry; Metallurgy 29 Expired
US5889572A Liquid crystal display device Electricity 23 Expired
US6632848B2 Heterogeneous anion exchanger Chemistry; Metallurgy 22 Expired
US4341685A Process for preparing organic dispersion of acid type fluorinated polymer Chemistry; Metallurgy 16 Expired
US7081484B2 Anion exchange membrane, process for its production and solution treating apparatus Chemistry; Metallurgy 16 Expired
US6471867B2 Electro-regenerating type apparatus for producing deionized water Chemistry; Metallurgy 14 Expired
US6780893B2 Anion exchanger and process for producing anion exchange membrane Chemistry; Metallurgy 13 Expired
US6565725B2 Method for producing deionized water Chemistry; Metallurgy 10 Expired
US5300228A Method for separating and recovering an acid Chemistry; Metallurgy 9 Expired
US4298699A Process for producing fluorinated polymer having ion-exchange groups Chemistry; Metallurgy 7 Expired
US5128378A Cation exchanger Chemistry; Metallurgy 5 Expired
US4127731A Process for producing fluorinated acyl fluoride having an ester group Chemistry; Metallurgy 3 Expired
US4610764A Electrolytic cation exchange membrane Chemistry; Metallurgy 2 Expired
US5300204A Method for hydrogen ion-selective electrodialysis Chemistry; Metallurgy 2 Expired
US6569301B2 Cation exchange membrane selectively permeable to monovalent cations and method for its production Chemistry; Metallurgy 0 Expired

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