Frederick Herbert Walker
21Patents
9h-index
17Co-inventors
72Inventor score
Filing activity: May 1, 1990 → Apr 30, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5489630A | Self-emulsifying epoxy curing agent | Chemistry; Metallurgy | 19 | Expired |
| US6008313A | Polyamide curing agents based on mixtures of polyethyleneamines and piperazine derivatives | Chemistry; Metallurgy | 19 | Expired |
| US5155201A | Polyurethane polyols and high solids coatings therefrom | Chemistry; Metallurgy | 18 | Expired |
| US5576416A | Amide-containing self-emulsifying epoxy curing agent | Chemistry; Metallurgy | 17 | Expired |
| US5688905A | Primary-tertiary diamines mixed with polyamines as epoxy resin hardeners | Chemistry; Metallurgy | 16 | Expired |
| US6258920A | Polyamidoamine curing agents based on mixtures of fatty and aromatic carboxylic acids | Chemistry; Metallurgy | 15 | Expired |
| US5599855A | Self-emulsifying epoxy curing agent | Chemistry; Metallurgy | 11 | Expired |
| US5596030A | Amide-containing self-emulsifying epoxy curing agent | Chemistry; Metallurgy | 10 | Expired |
| US5527839A | Self-emulsifying epoxy curing agent based on the reaction product of epoxy resin and polyether polyol | Chemistry; Metallurgy | 9 | Expired |
| US5130405A | Acid etch resistant coatings | Physics | 8 | Expired |
| US6331583A | Acid catalyzed polymerization of aqueous epoxy resin emulsions and uses thereof | Chemistry; Metallurgy | 8 | Expired |
| US7666954B2 | Epoxy resin amine curing agent of N,N′-dimethyl secondary diamine polymer | Emerging Cross-Sectional Technologies | 7 | Active |
| US5491192A | Non-aqueous dispersion for alkyd formulation | Chemistry; Metallurgy | 6 | Expired |
| US8512594B2 | Curing agent of N,N′-dimethyl-meta-xylylenediamine and multifunctional amin(s) | Chemistry; Metallurgy | 5 | Active |
| US6753386B1 | Polyurethane polyols and coatings thereof having reduced viscosity | Chemistry; Metallurgy | 4 | Expired |
| US6777088B2 | Packaging materials having barrier coatings based on water-epoxy resin copolymers | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8735512B2 | Curing agent for low temperature cure applications | Chemistry; Metallurgy | 2 | Active |
| US6800717B2 | Acid catalyzed copolymerization of water and epoxy resin and uses thereof | Chemistry; Metallurgy | 2 | Expired |
| US8536284B2 | N,N′-dimethyl secondary diamine polymer as epoxy resin curing agent | Emerging Cross-Sectional Technologies | 0 | Active |
| US7112635B2 | Acid catalyzed copolymerization of water, tetrahydrofuran and multifunctional epoxides and uses thereof | Emerging Cross-Sectional Technologies | 0 | Expired |
| US9334409B2 | Curing agent for low temperature cure applications | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.