George P. Speranza
157Patents
19h-index
37Co-inventors
86Inventor score
Filing activity: Nov 18, 1974 → Aug 31, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4705814A | Reaction product of polyoxyalkylene polyamine and an aliphatic isocyanate | Chemistry; Metallurgy | 42 | Expired |
| US4469824A | Liquid terephthalic ester polyols and polyisocyanurate foams therefrom | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5298618A | Macrocyclic oxamides | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4514530A | Modified amine curing agents and epoxy resins cured therewith | Chemistry; Metallurgy | 34 | Expired |
| US3968089A | Polymer-prepolymer composition prepared by polymerizing an ethylenically unsaturated monomer in the presence of an isocyanate-terminated prepolymer | Chemistry; Metallurgy | 33 | Expired |
| US4296213A | Polyurethane foams using a polyurea polymer polyol | Chemistry; Metallurgy | 31 | Expired |
| US4485196A | Liquid phase polyols which are alkylene oxide adducts of terephthalic esters from recycled polyethylene terephthalate | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5324812A | Water soluble polyamide from polyalkylene glycol diamines and polycarboxylic acids | Chemistry; Metallurgy | 30 | Expired |
| US4267120A | Polyester polycarbonates | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4316991A | Modification of polyols with epoxy resins | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5086162A | Polyether amide from polyalkylene glycol diamine and diacid mixture | Chemistry; Metallurgy | 26 | Expired |
| US5053484A | Polyether amide from mixture of polyether diamine | Chemistry; Metallurgy | 24 | Expired |
| US4049591A | Foams and elastomers prepared in the presence of high tertiary amine content polyurethane catalysts | Chemistry; Metallurgy | 23 | Expired |
| US4186255A | Bis-quaternary ammonium salts as polyisocyanurate catalysts | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4886867A | Novel compositions from polyoxyalkylene amines and epoxides | Chemistry; Metallurgy | 22 | Expired |
| US5118785A | Preparation of polyether amide from tetraethylene glycol diamine and terephthalic acid | Chemistry; Metallurgy | 21 | Expired |
| US4506090A | Aromatic polyols made from polyethylene terephthalate scrap, glycols and aromatic carbonyl-containing compounds | Chemistry; Metallurgy | 21 | Expired |
| US4761465A | Difunctional isocyanate-terminated polyoxyalkylene diamine prepolymers and polymer coatings applications | Chemistry; Metallurgy | 19 | Expired |
| US4952732A | Mannich condensates of a substituted phenol and an alkylamine containing internal alkoxy groups | Chemistry; Metallurgy | 19 | Expired |
| US4946933A | Elastomeric polyamide hot melt adhesive from low molecular weight polyoxyethylene diamine | Chemistry; Metallurgy | 19 | Expired |
| US4194069A | Urea derivative and use as polyurethane catalyst | Chemistry; Metallurgy | 18 | Expired |
| US4452922A | Polyamide co-polymer polyols made with diesters and diamines and polyurethanes therefrom | Chemistry; Metallurgy | 17 | Expired |
| US4309532A | Modification of amino polyols with epoxy resins | Chemistry; Metallurgy | 17 | Expired |
| US5342918A | Carboxyl-terminated polyetheramines | Chemistry; Metallurgy | 17 | Expired |
| US5128441A | Block polyamido condensation products | Chemistry; Metallurgy | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.