Yoshio Sugaya
19Patents
11h-index
27Co-inventors
72Inventor score
Filing activity: Nov 8, 1976 → Jul 30, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| 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.