John K. Litchfield

Person

Bedford, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Metal-bonded, carbon fiber-reinforced composites
- Patent number 5,495,979
- Issue date Mar 5, 1996
- Surmet Corporation
- Suri A. Sastri
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Pyrite cathode material for a thermal battery
- Patent number 5,151,262
- Issue date Sep 29, 1992
- The United States of America as represented by the Secretary of the Navy
- J. Paul Pemsler
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Dioxime ion exchangers
- Patent number 4,339,348
- Issue date Jul 13, 1982
- Kennecott Corporation
- Ralph W. M. Lai
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Cobalt solvent extraction with dioxime ion exchangers
- Patent number 4,301,124
- Issue date Nov 17, 1981
- Kennecott Corporation
- Ralph W. M. Lai
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Solvent extraction of copper, nickel with methyl hexyl dioxime
- Patent number 4,248,837
- Issue date Feb 3, 1981
- Kennecott Copper Corporation
- Ralph W. M. Lai
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of molybdenum values from dilute solutions
- Patent number 4,211,753
- Issue date Jul 8, 1980
- Kennecott Copper Corporation
- J. Paul Pemsler
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of copper by ferrous ion precipitation
- Patent number 4,197,117
- Issue date Apr 8, 1980
- Kennecott Copper Corporation
- J. Paul Pemsler
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Steam stripping of ammoniacal solutions and simultaneous loading of...
- Patent number 4,005,173
- Issue date Jan 25, 1977
- Kennecott Copper Corporation
- J. Paul Pemsler
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Solvent-in-pulp extraction of copper and nickel from ammoniacal lea...
- Patent number 3,950,487
- Issue date Apr 13, 1976
- Kennecott Copper Corporation
- J. Paul Pemsler
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

John K. Litchfield

Person

Patents Grantslast 30 patents

Metal-bonded, carbon fiber-reinforced composites

Pyrite cathode material for a thermal battery

Dioxime ion exchangers

Cobalt solvent extraction with dioxime ion exchangers

Solvent extraction of copper, nickel with methyl hexyl dioxime

Recovery of molybdenum values from dilute solutions

Recovery of copper by ferrous ion precipitation

Steam stripping of ammoniacal solutions and simultaneous loading of...

Solvent-in-pulp extraction of copper and nickel from ammoniacal lea...