Inventor · disambiguated record
Robert R. Grinstead
Also filed as: GRINSTEAD ROBERT · GRINSTEAD ROBERT R
20 granted patents·533 citations·filing 1974–2000
96Inventor score
Files withDOW CHEMICAL CO19
Top patents by PatentIndex Score
20 records- 0194US4098867AWater-insoluble chelate exchange resins from aminopyridines and process for the selective extraction of valuable metals using the sameDOW CHEMICAL CO·Filed 1977·Granted Jul 4, 1978·66 cites·11 claims
- 0294US4031038AWater insoluble chelate exchange resins having a crosslinked polymer matrix and pendant thereto a plurality of methyleneaminopyridine groupsDOW CHEMICAL CO·Filed 1975·Granted Jun 21, 1977·71 cites·20 claims
- 0388US4741831AProcess and composition for removal of metal ions from aqueous solutionsDOW CHEMICAL CO·Filed 1986·Granted May 3, 1988·66 cites·18 claims
- 0487US4755298AProcess for removing boron ions from aqueous solutionsDOW CHEMICAL CO·Filed 1986·Granted Jul 5, 1988·63 cites·20 claims
- 0587US4382872AMetallurgical extractant systemDOW CHEMICAL CO·Filed 1980·Granted May 10, 1983·27 cites·9 claims
- 0684US4708854AProcess for the removal of NO from fluid streams using a water-soluble polymeric chelate of a polyvalent metalDOW CHEMICAL CO·Filed 1986·Granted Nov 24, 1987·33 cites·17 claims
- 0784US4254087AExtraction of copper, nickel and cobalt using alkylaromatic sulfonic acids and chelating aminesDOW CHEMICAL CO·Filed 1979·Granted Mar 3, 1981·24 cites·10 claims
- 0884US3997599AExtraction of carboxylic acids from dilute aqueous solutionsDOW CHEMICAL CO·Filed 1974·Granted Dec 14, 1976·14 cites·3 claims
- 0976US4976866AConcentric tubular membrane device and process useful in ion exchange or absorbent processesDOW CHEMICAL CO·Filed 1989·Granted Dec 11, 1990·40 cites·23 claims
- 1071US4808385AProcess for the removal of H2 S from fluid streams using a water soluble polymeric chelate of an oxidizing polyvalent metalDOW CHEMICAL CO·Filed 1987·Granted Feb 28, 1989·33 cites·7 claims
- 1167US6524330B1Method of ocular treatmentFiled 2000·Granted Feb 25, 2003·42 cites·18 claims
- 1252US4778664AProcess for the removal of NO from fluid streams using a water soluble polymeric chelate of a polyvalent metalDOW CHEMICAL CO·Filed 1987·Granted Oct 18, 1988·15 cites·15 claims
- 1351US3980702AExtraction of carboxylic acids from dilute aqueous solutionsDOW CHEMICAL CO·Filed 1975·Granted Sep 14, 1976·3 cites·3 claims
- 1451US3980701AExtraction of carboxylic acids from dilute aqueous solutionsDOW CHEMICAL CO·Filed 1975·Granted Sep 14, 1976·3 cites·2 claims
- 1549US4123435ANitro-substituted benzoxazoles having utility as metallurgical extractantsDOW CHEMICAL CO·Filed 1977·Granted Oct 31, 1978·6 cites·7 claims
- 1646US4859437AProcess for the removal of H2S from fluid streams using a water soluble polymeric chelate of an oxidizing polyvalent metalDOW CHEMICAL CO·Filed 1986·Granted Aug 22, 1989·12 cites·15 claims
- 1746US4451375AIodine adsorption via picolylamine ion exchange resinsDOW CHEMICAL CO·Filed 1983·Granted May 29, 1984·7 cites·4 claims
- 1840US4910002ACyclic process for the removal of NOx and SOx from gas streams using a water-soluble, polymeric chelate of a polyvalent metal and membrane separation meansDOW CHEMICAL CO·Filed 1989·Granted Mar 20, 1990·8 cites·15 claims
- 1930US3980703AExtraction of carboxylic acids from dilute aqueous solutionsDOW CHEMICAL CO·Filed 1975·Granted Sep 14, 1976·0 cites·2 claims
- 2030US3980704AExtraction of carboxylic acids from dilute aqueous solutionsDOW CHEMICAL CO·Filed 1975·Granted Sep 14, 1976·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →