Inventor · disambiguated record
Herbert H. Espy
Also filed as: ESPY HERBERT H · ESPY HERBERT HASTINGS
11 granted patents·316 citations·filing 1974–1995
92Inventor score
Files withHERCULES INC11
Top patents by PatentIndex Score
11 records- 0190US5338807ASynthesis of creping aids based on polyamides containing methyl bis(3-aminopropylamine)HERCULES INC·Filed 1991·Granted Aug 16, 1994·95 cites·8 claims
- 0289US3951921ACationic water soluble resinous reaction product of polyaminopolyamide-epichlorohydrin and nitrogen compoundHERCULES INC·Filed 1974·Granted Apr 20, 1976·39 cites·9 claims
- 0388US4751337AConversion of solid dicyclopentadiene to a liquid monomer for use in reaction injection moldingHERCULES INC·Filed 1986·Granted Jun 14, 1988·29 cites·3 claims
- 0474US5316623AAbsorbance and permanent wet-strength in tissue and toweling paperHERCULES INC·Filed 1991·Granted May 31, 1994·40 cites·17 claims
- 0571US5674358ARepulping wet strength paper and paperboard with persulfate and a carbonate bufferHERCULES INC·Filed 1995·Granted Oct 7, 1997·17 cites·12 claims
- 0667US3966684ACationic water soluble polymeric reaction product of polyaminopolyureylene-epichlorohydrin and nitrogen compoundHERCULES INC·Filed 1974·Granted Jun 29, 1976·15 cites·9 claims
- 0761US4458042AAbsorbent materialHERCULES INC·Filed 1983·Granted Jul 3, 1984·45 cites·8 claims
- 0861US3966694ACationic water soluble polymeric reaction product of poly(diallylamine)-epihalohydrin and nitrogen compoundHERCULES INC·Filed 1974·Granted Jun 29, 1976·12 cites·9 claims
- 0944US5656699AOligoamide-epichlorohydrin resins as drainage aidsHERCULES INC·Filed 1994·Granted Aug 12, 1997·10 cites·7 claims
- 1044USH1613HPolyamide-epichlorohydrin wet-strength resins with reduced content of epichlorohydrin-derived by-products in-situ solvent extractionHERCULES INC·Filed 1994·Granted Nov 5, 1996·5 cites·21 claims
- 1142US5275698AEnhancement of tissue paper softness with minimal effect on strengthHERCULES INC·Filed 1992·Granted Jan 4, 1994·9 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →