Herbert H. Espy
11Patents
8h-index
4Co-inventors
65Inventor score
Filing activity: Sep 27, 1974 → Jun 7, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5338807A | Synthesis of creping aids based on polyamides containing methyl bis(3-aminopropylamine) | Textiles; Paper | 64 | Expired |
| US4458042A | Absorbent material | Chemistry; Metallurgy | 33 | Expired |
| US5316623A | Absorbance and permanent wet-strength in tissue and toweling paper | Textiles; Paper | 28 | Expired |
| US3951921A | Cationic water soluble resinous reaction product of polyaminopolyamide-epichlorohydrin and nitrogen compound | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4751337A | Conversion of solid dicyclopentadiene to a liquid monomer for use in reaction injection molding | Chemistry; Metallurgy | 13 | Expired |
| US5674358A | Repulping wet strength paper and paperboard with persulfate and a carbonate buffer | Emerging Cross-Sectional Technologies | 10 | Expired |
| US3966694A | Cationic water soluble polymeric reaction product of poly(diallylamine)-epihalohydrin and nitrogen compound | Chemistry; Metallurgy | 10 | Expired |
| US3966684A | Cationic water soluble polymeric reaction product of polyaminopolyureylene-epichlorohydrin and nitrogen compound | Chemistry; Metallurgy | 8 | Expired |
| USH1613H | Polyamide-epichlorohydrin wet-strength resins with reduced content of | General | 4 | Active |
| US5275698A | Enhancement of tissue paper softness with minimal effect on strength | Textiles; Paper | 4 | Expired |
| US5656699A | Oligoamide-epichlorohydrin resins as drainage aids | Textiles; Paper | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.