Assignee
MILCHEM INC
14 patents
Top patents by PatentIndex Score
US4293427AOct 6, 1981
Drilling fluid containing a copolymer filtration control agent
MILCHEM INC68 citations95
US4575428AMar 11, 1986
Invert emulsion drilling fluid comprising oligamide composition
MILCHEM INC47 citations92
US4663076AMay 5, 1987
Invert emulsion drilling fluid comprising oligamide composition
MILCHEM INC24 citations81
US4547299AOct 15, 1985
Drilling fluid containing a copolymer filtration control agent
MILCHEM INC25 citations81
US4735732AApr 5, 1988
Filtration control additive for invert emulsion drilling fluids and method of preparation
MILCHEM INC14 citations73
US4728444AMar 1, 1988
Filtration control additive for invert emulsion drilling fluids and method of preparation
MILCHEM INC12 citations73
US4309329AJan 5, 1982
Aqueous drilling fluid additive
MILCHEM INC13 citations72
US4288582ASep 8, 1981
Aqueous drilling fluid additive, composition and process
MILCHEM INC12 citations72
US4283517AAug 11, 1981
Continuous process for solution polymerization of acrylamide
MILCHEM INC13 citations72
US4268400AMay 19, 1981
Aqueous drilling fluid additive, composition and process
MILCHEM INC15 citations72
US4181617AJan 1, 1980
Aqueous drilling fluid and lubricant composition
MILCHEM INC21 citations72
US4354513AOct 19, 1982
Cuttings washer assembly
MILCHEM INC12 citations59
US4057683ANov 8, 1977
Graft copolymer and process for making same
MILCHEM INC15 citations59
US4305110ADec 8, 1981
Mud separator valve apparatus
MILCHEM INC1 citations33