Inventor · disambiguated record
David A. Huddleston
Also filed as: HUDDLESTON DAVID A
12 granted patents·539 citations·filing 1987–1995
94Inventor score
Files withNALCO CHEMICAL CO12
Top patents by PatentIndex Score
12 records- 0194US5417759ASet retarding additive for cement slurriesNALCO CHEMICAL CO·Filed 1994·Granted May 23, 1995·77 cites·8 claims
- 0292US5028271AVinyl grafted lignite fluid loss additivesNALCO CHEMICAL CO·Filed 1990·Granted Jul 2, 1991·73 cites·14 claims
- 0388US5134215AMethod for reducing fluid loss from oilfield cement slurries using vinyl grafted wattle tanninNALCO CHEMICAL CO·Filed 1990·Granted Jul 28, 1992·50 cites·10 claims
- 0488US4938803AVinyl grafted lignite fluid loss additivesNALCO CHEMICAL CO·Filed 1989·Granted Jul 3, 1990·55 cites·22 claims
- 0586US5110485ALiquid aluminum phosphate salt gelling agentNALCO CHEMICAL CO·Filed 1990·Granted May 5, 1992·53 cites·14 claims
- 0686US5057233AHydrocarbon geller and method for making the sameNALCO CHEMICAL CO·Filed 1989·Granted Oct 15, 1991·46 cites·15 claims
- 0785US5147964AMethod for reducing fluid loss from oilfield cement slurries using vinyl grafted wattle tanninNALCO CHEMICAL CO·Filed 1991·Granted Sep 15, 1992·53 cites·10 claims
- 0884US4877894AHydrocarbon geller and method for making the sameNALCO CHEMICAL CO·Filed 1988·Granted Oct 31, 1989·40 cites·6 claims
- 0980US5202035ALiquid aluminum phosphate salt gelling agentNALCO CHEMICAL CO·Filed 1992·Granted Apr 13, 1993·38 cites·5 claims
- 1070US5032297AEnzymatically degradable fluid loss additiveNALCO CHEMICAL CO·Filed 1989·Granted Jul 16, 1991·21 cites·11 claims
- 1167US4781845AHydrocarbon gellantNALCO CHEMICAL CO·Filed 1987·Granted Nov 1, 1988·25 cites·2 claims
- 1244US5534611ASulfonated and carboxylated aminoethylenephosphonic acid and aminobis (methylene) phosphinic acidNALCO CHEMICAL CO·Filed 1995·Granted Jul 9, 1996·8 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →