Inventor · disambiguated record
David H. Dumas
Also filed as: DUMAS DAVID H · DUMAS DAVID HOWARD
22 granted patents·735 citations·filing 1975–1999
97Inventor score
Files withHERCULES INC22
Top patents by PatentIndex Score
22 records- 0196US5685815AProcess of using paper containing alkaline sizing agents with improved conversion capabilityHERCULES INC·Filed 1994·Granted Nov 11, 1997·61 cites·134 claims
- 0296US4279794ASizing method and sizing composition for use thereinHERCULES INC·Filed 1979·Granted Jul 21, 1981·84 cites·4 claims
- 0395US4522686AAqueous sizing compositionsHERCULES INC·Filed 1983·Granted Jun 11, 1985·114 cites·10 claims
- 0494US4240935AKetene dimer paper sizing compositionsHERCULES INC·Filed 1978·Granted Dec 23, 1980·66 cites·8 claims
- 0592US5139615AComposite sheet made from mechanically delaminated vermiculiteHERCULES INC·Filed 1988·Granted Aug 18, 1992·59 cites·15 claims
- 0685US4295931ASizing method and sizing composition for use thereinHERCULES INC·Filed 1980·Granted Oct 20, 1981·35 cites·4 claims
- 0782US4317756ASizing composition comprising a hydrophobic cellulose-reactive sizing agent and a cationic polymerHERCULES INC·Filed 1980·Granted Mar 2, 1982·41 cites·5 claims
- 0881US4243481ASizing compositionsHERCULES INC·Filed 1978·Granted Jan 6, 1981·26 cites·9 claims
- 0972US3992345AWater-dispersible thermosettable cationic resins and paper sized therewithHERCULES INC·Filed 1975·Granted Nov 16, 1976·22 cites·6 claims
- 1070US4407994AAqueous sizing composition comprising ketene dimer and epihalohydrin/polyamino polyamide/bis(hexamethylene)triamine reaction productHERCULES INC·Filed 1981·Granted Oct 4, 1983·27 cites·2 claims
- 1168US3968317AWater-dispersible thermosettable cationic resins and paper sized therewithHERCULES INC·Filed 1975·Granted Jul 6, 1976·13 cites·6 claims
- 1267US6316095B12-oxetanone sizing agents and their use in paperHERCULES INC·Filed 1999·Granted Nov 13, 2001·17 cites·31 claims
- 1367US6007906AProcess of using fine paper containing 2-oxetanone sizing agent in high speed precision converting or reprographic operationsHERCULES INC·Filed 1997·Granted Dec 28, 1999·12 cites·61 claims
- 1467US4478682ASizing method and sizing composition for use thereinHERCULES INC·Filed 1982·Granted Oct 23, 1984·23 cites·3 claims
- 1565US4904520AGas-permeable, liquid-impermeable nonwoven materialHERCULES INC·Filed 1988·Granted Feb 27, 1990·64 cites·24 claims
- 1664US5972100APretreatment of filler with cationic ketene dimerHERCULES INC·Filed 1991·Granted Oct 26, 1999·25 cites·16 claims
- 1752US3990939APaper sized with ketene dimer modified water-dispersible thermosettable cationic resinsHERCULES INC·Filed 1975·Granted Nov 9, 1976·8 cites·4 claims
- 1852US3989659AWater-dispersible thermosettable cationic resins and paper sized therewithHERCULES INC·Filed 1975·Granted Nov 2, 1976·8 cites·4 claims
- 1951US3988280AWater-dispersible thermosettable cationic resins and paper sized therewithHERCULES INC·Filed 1975·Granted Oct 26, 1976·10 cites·6 claims
- 2046US5176794AFlame spread barrier made from mechanically delaminated vermiculite sheetHERCULES INC·Filed 1991·Granted Jan 5, 1993·11 cites·19 claims
- 2138US4087395AWater-dispersible thermosettable cationic resins from reaction of (1) water soluble amino polyamide, (2) acid anhydride and (3) epihalohydrinHERCULES INC·Filed 1977·Granted May 2, 1978·5 cites·8 claims
- 2235US4380602AWater-soluble thermosettable resinous compositions containing dicyandiamide-formaldehyde condensates modified with epihalohydrin and process for preparing the sameHERCULES INC·Filed 1981·Granted Apr 19, 1983·4 cites·8 claims
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