Inventor
SCHROEDER JR DONALD E
US12 patents
⚠️ This page may combine multiple inventors who share the name “SCHROEDER JR DONALD E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MARATHON OIL CO
11 patentsUS4932474AJun 12, 1990
Staged screen assembly for gravel packing
MARATHON OIL CO132 citations93
US6253851B1Jul 3, 2001
Method of completing a well
MARATHON OIL CO86 citations92
US5062484ANov 5, 1991
Method of gravel packing a subterranean well
MARATHON OIL CO50 citations92
US4510397AApr 9, 1985
Polymer flow control apparatus
MARATHON OIL CO20 citations81
US4464509AAug 7, 1984
Apparatus and method for preparing polymers
MARATHON OIL CO11 citations73
US4144266AMar 13, 1979
Sulfonation of crude oils to produce petroleum sulfonates
MARATHON OIL CO10 citations73
US4614623ASep 30, 1986
Sulfonation of crude oils with gaseous SO3 to produce petroleum sulfonates
MARATHON OIL CO8 citations72
US4560517ADec 24, 1985
Sulfonation of crude oils with gaseous SO3 to produce petroleum sulfonates
MARATHON OIL CO9 citations72
US4013125AMar 22, 1977
Flooding with micellar dispersions containing petroleum sulfonates obtained by sulfonating whole or topped crude oil
MARATHON OIL CO11 citations72
US3964548AJun 22, 1976
Method for oil recovery by flooding with micellar dispersions containing crude oil sulfonates
MARATHON OIL CO8 citations72
US3956372AMay 11, 1976
Process for the production of petroleum sulfonate
MARATHON OIL CO12 citations68