Inventor · disambiguated record
David R. Cosper
Also filed as: COSPER DAVID R
19 granted patents·320 citations·filing 1974–1994
95Inventor score
Top patents by PatentIndex Score
19 records- 0187US5169497AApplication of enzymes and flocculants for enhancing the freeness of paper making pulpNALCO CHEMICAL CO·Filed 1991·Granted Dec 8, 1992·73 cites·6 claims
- 0284US4378235AScrubbing media for removing volatile organic material from paint spray boothsNALCO CHEMICAL CO·Filed 1981·Granted Mar 29, 1983·39 cites·7 claims
- 0373US5266243AMethod for preparing a ceramic oxide materialKNELLER JAMES F·Filed 1992·Granted Nov 30, 1993·27 cites·4 claims
- 0473US4554026AAqueous hydrotrope solutions for paint detackifiersNALCO CHEMICAL CO·Filed 1984·Granted Nov 19, 1985·30 cites·6 claims
- 0571US4159922AAccelerated process for causticization of Kraft green liquorNALCO CHEMICAL CO·Filed 1978·Granted Jul 3, 1979·12 cites·5 claims
- 0665US5441601ARecycling of xerographic waste paper using organic particulatesNALCO CHEMICAL CO·Filed 1994·Granted Aug 15, 1995·13 cites·17 claims
- 0765US4298428AUse of additives in pulp bleaching processes to preserve pulp strengthNALCO CHEMICAL CO·Filed 1980·Granted Nov 3, 1981·12 cites·6 claims
- 0861US5423946ACationic anionic polyelectrolytes for enhancing the freeness of paper pulpNALCO CHEMICAL CO·Filed 1994·Granted Jun 13, 1995·20 cites·5 claims
- 0959US5405495ARecycling of xerographic waste paper using organic particulatesNALCO CHEMICAL CO·Filed 1993·Granted Apr 11, 1995·11 cites·10 claims
- 1058US4244780AUse of thiourea dioxide in pulp bleaching processes to preserve pulp strength and aid in brightnessNALCO CHEMICAL CO·Filed 1979·Granted Jan 13, 1981·8 cites·1 claims
- 1156US4444573AHydrotropes and uses thereofNALCO CHEMICAL CO·Filed 1982·Granted Apr 24, 1984·18 cites·9 claims
- 1251US5324770AEthylene oxide/propylene oxide block copolymers as green binders for ceramicsNALCO CHEMICAL CO·Filed 1992·Granted Jun 28, 1994·10 cites·7 claims
- 1351US4268352AMethod of reducing soluble starch in broke repulping using a dual polymer combinationNALCO CHEMICAL CO·Filed 1979·Granted May 19, 1981·10 cites·6 claims
- 1451US4135969AGlycidaldehyde modified cationic polyacrylamide polymers used in paperNALCO CHEMICAL CO·Filed 1974·Granted Jan 23, 1979·6 cites·2 claims
- 1546US4432834AAdditive for felted cellulose fibersNALCO CHEMICAL CO·Filed 1980·Granted Feb 21, 1984·13 cites·13 claims
- 1641US4383889APulp refining process and additive thereforNALCO CHEMICAL CO·Filed 1981·Granted May 17, 1983·4 cites·6 claims
- 1737US4523932AHydrotropes and uses thereofNALCO CHEMICAL CO·Filed 1984·Granted Jun 18, 1985·7 cites·3 claims
- 1836US4255233AUse of polyacrylic acid in pulp bleaching processes to preserve pulp strength and aid in brightnessNALCO CHEMICAL CO·Filed 1979·Granted Mar 10, 1981·2 cites·4 claims
- 1934US4734258AMorpholinohexose reductone as an oxygen scavengerNALCO CHEMICAL CO·Filed 1987·Granted Mar 29, 1988·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →