Inventor
HUDDLESTON DAVID A
US12 patents
Patents
12 patentsUS5417759AMay 23, 1995
Set retarding additive for cement slurries
NALCO CHEMICAL CO77 citations95
US5147964ASep 15, 1992
Method for reducing fluid loss from oilfield cement slurries using vinyl grafted wattle tannin
NALCO CHEMICAL CO53 citations95
US5110485AMay 5, 1992
Liquid aluminum phosphate salt gelling agent
NALCO CHEMICAL CO53 citations95
US5028271AJul 2, 1991
Vinyl grafted lignite fluid loss additives
NALCO CHEMICAL CO73 citations95
US4938803AJul 3, 1990
Vinyl grafted lignite fluid loss additives
NALCO CHEMICAL CO55 citations95
US5202035AApr 13, 1993
Liquid aluminum phosphate salt gelling agent
NALCO CHEMICAL CO38 citations92
US5134215AJul 28, 1992
Method for reducing fluid loss from oilfield cement slurries using vinyl grafted wattle tannin
NALCO CHEMICAL CO50 citations92
US5057233AOct 15, 1991
Hydrocarbon geller and method for making the same
NALCO CHEMICAL CO46 citations92
US4877894AOct 31, 1989
Hydrocarbon geller and method for making the same
NALCO CHEMICAL CO40 citations92
US4781845ANov 1, 1988
Hydrocarbon gellant
NALCO CHEMICAL CO25 citations92
US5032297AJul 16, 1991
Enzymatically degradable fluid loss additive
NALCO CHEMICAL CO21 citations81
US5534611AJul 9, 1996
Sulfonated and carboxylated aminoethylenephosphonic acid and aminobis (methylene) phosphinic acid
NALCO CHEMICAL CO8 citations73