Inventor
GRINSTEAD ROBERT R
19 patents
Patents
19 patentsUS4755298AJul 5, 1988
Process for removing boron ions from aqueous solutions
DOW CHEMICAL CO63 citations96
US4741831AMay 3, 1988
Process and composition for removal of metal ions from aqueous solutions
DOW CHEMICAL CO66 citations96
US4098867AJul 4, 1978
Water-insoluble chelate exchange resins from aminopyridines and process for the selective extraction of valuable metals using the same
DOW CHEMICAL CO66 citations94
US4031038AJun 21, 1977
Water insoluble chelate exchange resins having a crosslinked polymer matrix and pendant thereto a plurality of methyleneaminopyridine groups
DOW CHEMICAL CO71 citations94
US4808385AFeb 28, 1989
Process for the removal of H2 S from fluid streams using a water soluble polymeric chelate of an oxidizing polyvalent metal
DOW CHEMICAL CO33 citations92
US4708854ANov 24, 1987
Process for the removal of NO from fluid streams using a water-soluble polymeric chelate of a polyvalent metal
DOW CHEMICAL CO33 citations92
US4976866ADec 11, 1990
Concentric tubular membrane device and process useful in ion exchange or absorbent processes
DOW CHEMICAL CO40 citations91
US4382872AMay 10, 1983
Metallurgical extractant system
DOW CHEMICAL CO27 citations82
US4254087AMar 3, 1981
Extraction of copper, nickel and cobalt using alkylaromatic sulfonic acids and chelating amines
DOW CHEMICAL CO24 citations82
US4910002AMar 20, 1990
Cyclic process for the removal of NOx and SOx from gas streams using a water-soluble, polymeric chelate of a polyvalent metal and membrane separation means
DOW CHEMICAL CO8 citations73
US4859437AAug 22, 1989
Process for the removal of H2S from fluid streams using a water soluble polymeric chelate of an oxidizing polyvalent metal
DOW CHEMICAL CO12 citations73
US4778664AOct 18, 1988
Process for the removal of NO from fluid streams using a water soluble polymeric chelate of a polyvalent metal
DOW CHEMICAL CO15 citations73
US4451375AMay 29, 1984
Iodine adsorption via picolylamine ion exchange resins
DOW CHEMICAL CO7 citations73
US3997599ADec 14, 1976
Extraction of carboxylic acids from dilute aqueous solutions
DOW CHEMICAL CO14 citations73
US4123435AOct 31, 1978
Nitro-substituted benzoxazoles having utility as metallurgical extractants
DOW CHEMICAL CO6 citations72
US3980701ASep 14, 1976
Extraction of carboxylic acids from dilute aqueous solutions
DOW CHEMICAL CO3 citations62
US3980702ASep 14, 1976
Extraction of carboxylic acids from dilute aqueous solutions
DOW CHEMICAL CO3 citations62
US3980703ASep 14, 1976
Extraction of carboxylic acids from dilute aqueous solutions
DOW CHEMICAL CO0 citations52
US3980704ASep 14, 1976
Extraction of carboxylic acids from dilute aqueous solutions
DOW CHEMICAL CO0 citations52