Robert R. Grinstead

Person

Walnut Creek, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Concentric tubular membrane device and process useful in ion exchan...
- Patent number 4,976,866
- Issue date Dec 11, 1990
- The Dow Chemical Company
- Robert R. Grinstead
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Cyclic process for the removal of NO.sub.x and SO.sub.x from gas st...
- Patent number 4,910,002
- Issue date Mar 20, 1990
- The Dow Chemical Company
- Robert R. Grinstead
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the removal of H2S from fluid streams using a water sol...
- Patent number 4,859,437
- Issue date Aug 22, 1989
- The Dow Chemical Company
- Robert R. Grinstead
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the removal of H.sub.2 S from fluid streams using a wat...
- Patent number 4,808,385
- Issue date Feb 28, 1989
- The Dow Chemical Company
- Robert R. Grinstead
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the removal of NO from fluid streams using a water solu...
- Patent number 4,778,664
- Issue date Oct 18, 1988
- The Dow Chemical Company
- Robert R. Grinstead
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for removing boron ions from aqueous solutions
- Patent number 4,755,298
- Issue date Jul 5, 1988
- The Dow Chemical Company
- Robert R. Grinstead
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process and composition for removal of metal ions from aqueous solu...
- Patent number 4,741,831
- Issue date May 3, 1988
- The Dow Chemical Company
- Robert R. Grinstead
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for the removal of NO from fluid streams using a water-solu...
- Patent number 4,708,854
- Issue date Nov 24, 1987
- The Dow Chemical Company
- Robert R. Grinstead
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Iodine adsorption via picolylamine ion exchange resins
- Patent number 4,451,375
- Issue date May 29, 1984
- The Dow Chemical Company
- Robert R. Grinstead
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Metallurgical extractant system
- Patent number 4,382,872
- Issue date May 10, 1983
- The Dow Chemical Co.
- Robert R. Grinstead
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Extraction of copper, nickel and cobalt using alkylaromatic sulfoni...
- Patent number 4,254,087
- Issue date Mar 3, 1981
- The Dow Chemical Company
- Robert R. Grinstead
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Nitro-substituted benzoxazoles having utility as metallurgical extr...
- Patent number 4,123,435
- Issue date Oct 31, 1978
- The Dow Chemical Company
- Robert R. Grinstead
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Water-insoluble chelate exchange resins from aminopyridines and pro...
- Patent number 4,098,867
- Issue date Jul 4, 1978
- The Dow Chemical Company
- Robert R. Grinstead
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Water insoluble chelate exchange resins having a crosslinked polyme...
- Patent number 4,031,038
- Issue date Jun 21, 1977
- The Dow Chemical Company
- Robert R. Grinstead
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Extraction of carboxylic acids from dilute aqueous solutions
- Patent number 3,997,599
- Issue date Dec 14, 1976
- The Dow Chemical Company
- Robert R. Grinstead
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Extraction of carboxylic acids from dilute aqueous solutions
- Patent number 3,980,704
- Issue date Sep 14, 1976
- The Dow Chemical Company
- Robert R. Grinstead
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Extraction of carboxylic acids from dilute aqueous solutions
- Patent number 3,980,703
- Issue date Sep 14, 1976
- The Dow Chemical Company
- Robert R. Grinstead
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Extraction of carboxylic acids from dilute aqueous solutions
- Patent number 3,980,701
- Issue date Sep 14, 1976
- The Dow Chemical Company
- Robert R. Grinstead
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Extraction of carboxylic acids from dilute aqueous solutions
- Patent number 3,980,702
- Issue date Sep 14, 1976
- The Dow Chemical Company
- Robert R. Grinstead
- C07 - ORGANIC CHEMISTRY

Robert R. Grinstead

Person

Patents Grantslast 30 patents

Concentric tubular membrane device and process useful in ion exchan...

Cyclic process for the removal of NO.sub.x and SO.sub.x from gas st...

Process for the removal of H2S from fluid streams using a water sol...

Process for the removal of H.sub.2 S from fluid streams using a wat...

Process for the removal of NO from fluid streams using a water solu...

Process for removing boron ions from aqueous solutions

Process and composition for removal of metal ions from aqueous solu...

Process for the removal of NO from fluid streams using a water-solu...

Iodine adsorption via picolylamine ion exchange resins

Metallurgical extractant system

Extraction of copper, nickel and cobalt using alkylaromatic sulfoni...

Nitro-substituted benzoxazoles having utility as metallurgical extr...

Water-insoluble chelate exchange resins from aminopyridines and pro...

Water insoluble chelate exchange resins having a crosslinked polyme...

Extraction of carboxylic acids from dilute aqueous solutions

Extraction of carboxylic acids from dilute aqueous solutions

Extraction of carboxylic acids from dilute aqueous solutions

Extraction of carboxylic acids from dilute aqueous solutions

Extraction of carboxylic acids from dilute aqueous solutions