Donald R. Weir

Person

Fort Saskatchewan, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Recovery of zinc from zinc-containing sulphidic material
- Patent number 4,832,925
- Issue date May 23, 1989
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Production of fine spherical copper powder
- Patent number 4,645,532
- Issue date Feb 24, 1987
- Sherritt Gordon Mines Limited
- Vladimir N. Mackiw
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for the recovery of silver from a residue essentially free...
- Patent number 4,632,701
- Issue date Dec 30, 1986
- Sherritt Gordon Mines Limited
- Roman M. Genik-Sas-Berezowsky
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of gold from refractory auriferous iron-containing sulphid...
- Patent number 4,610,724
- Issue date Sep 9, 1986
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for the pressure oxidation acid leaching of non-ferrous met...
- Patent number 4,606,763
- Issue date Aug 19, 1986
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for separately recovering gold and silver from solution by...
- Patent number 4,606,766
- Issue date Aug 19, 1986
- Sherritt Gordon Mines Limited
- Roman M. Genik-Sas-Berezowsky
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of gold from refractory auriferous iron-containing sulphid...
- Patent number 4,605,439
- Issue date Aug 12, 1986
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of cobalt and nickel from sulphidic material
- Patent number 4,594,102
- Issue date Jun 10, 1986
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of gold from refractory auriferous iron-containing sulphid...
- Patent number 4,571,264
- Issue date Feb 18, 1986
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of gold from refractory auriferous iron-containing sulphid...
- Patent number 4,571,263
- Issue date Feb 18, 1986
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of platinum group metals from nickel-copper-iron matte
- Patent number 4,571,262
- Issue date Feb 18, 1986
- Sherritt Gordon Mines Limited
- Derek G. E. Kerfoot
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for separately recovering zinc and lead values from zinc an...
- Patent number 4,545,963
- Issue date Oct 8, 1985
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for recovering zinc from zinc ferrite material
- Patent number 4,510,028
- Issue date Apr 9, 1985
- Sherritt Gordon Mines Limited
- Gerald L. Bolton
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of zinc from zinc containing sulphidic material
- Patent number 4,505,744
- Issue date Mar 19, 1985
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Recovery of zinc from zinc containing sulphidic materials
- Patent number 4,443,253
- Issue date Apr 17, 1984
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of zinc from zinc-containing sulphidic material
- Patent number 4,440,569
- Issue date Apr 3, 1984
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Removal of radium from aqueous sulphate solutions
- Patent number 4,423,007
- Issue date Dec 27, 1983
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Recovery of uranium from material containing iron, arsenic and sili...
- Patent number 4,406,864
- Issue date Sep 27, 1983
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Removal of uranium from sulphate solutions containing molybdenum
- Patent number 4,405,566
- Issue date Sep 20, 1983
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Removal of dissolved cadmium and copper from sulphate solution with...
- Patent number 4,405,570
- Issue date Sep 20, 1983
- Sherritt Gordon Mines Limited
- Jack Van der Meulen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Removal of selenium from acidic copper/nickel solutions
- Patent number 4,374,808
- Issue date Feb 22, 1983
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Removal of arsenic from aqueous solutions
- Patent number 4,366,128
- Issue date Dec 28, 1982
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Removal of selenium (IV) and (VI) from acidic copper sulphate solut...
- Patent number 4,330,508
- Issue date May 18, 1982
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the recovery of copper and zinc values from sulphidic ore
- Patent number 4,279,867
- Issue date Jul 21, 1981
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Removal of selenium from sulphate solutions
- Patent number 4,222,999
- Issue date Sep 16, 1980
- Sherritt Gordon Mines Limited
- Donald R. Weir
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for recovery of copper and zinc from complex sulphides
- Patent number 4,157,912
- Issue date Jun 12, 1979
- Cominco Ltd.
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Treatment of dissolved basic nickel carbonate to obtain nickel
- Patent number 4,148,632
- Issue date Apr 10, 1979
- Sherritt Gordon Mines Limited
- Willie Seibt
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Hydrometallurgical process for the production of cobalt powder from...
- Patent number 4,108,640
- Issue date Aug 22, 1978
- Sherritt Gordon Mines Limited
- Herbert F. Wallace
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for recovering metals from metal ammine bearing ammonium sa...
- Patent number 3,998,627
- Issue date Dec 21, 1976
- Sherritt Gordon Mines Limited
- Donald Robert Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Donald R. Weir

Person

Patents Grantslast 30 patents

Recovery of zinc from zinc-containing sulphidic material

Production of fine spherical copper powder

Process for the recovery of silver from a residue essentially free...

Recovery of gold from refractory auriferous iron-containing sulphid...

Process for the pressure oxidation acid leaching of non-ferrous met...

Process for separately recovering gold and silver from solution by...

Recovery of gold from refractory auriferous iron-containing sulphid...

Recovery of cobalt and nickel from sulphidic material

Recovery of gold from refractory auriferous iron-containing sulphid...

Recovery of gold from refractory auriferous iron-containing sulphid...

Recovery of platinum group metals from nickel-copper-iron matte

Process for separately recovering zinc and lead values from zinc an...

Process for recovering zinc from zinc ferrite material

Recovery of zinc from zinc containing sulphidic material

Recovery of zinc from zinc containing sulphidic materials

Recovery of zinc from zinc-containing sulphidic material

Removal of radium from aqueous sulphate solutions

Recovery of uranium from material containing iron, arsenic and sili...

Removal of uranium from sulphate solutions containing molybdenum

Removal of dissolved cadmium and copper from sulphate solution with...

Removal of selenium from acidic copper/nickel solutions

Removal of arsenic from aqueous solutions

Removal of selenium (IV) and (VI) from acidic copper sulphate solut...

Process for the recovery of copper and zinc values from sulphidic ore

Removal of selenium from sulphate solutions

Process for recovery of copper and zinc from complex sulphides

Treatment of dissolved basic nickel carbonate to obtain nickel

Hydrometallurgical process for the production of cobalt powder from...

Process for recovering metals from metal ammine bearing ammonium sa...