Alkis S. Rappas

Person

Arlington, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Alkali metal mercaptide solvent extraction of cobalt, nickel
- Patent number 4,148,816
- Issue date Apr 10, 1979
- Kennecott Copper Corporation
- Alkis S. Rappas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Nickel and cobalt solvent extraction with mercaptides
- Patent number 4,148,813
- Issue date Apr 10, 1979
- Kennecott Copper Corporation
- Alkis S. Rappas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Amino-thiol nickel and cobalt solvent extraction
- Patent number 4,148,815
- Issue date Apr 10, 1979
- Kennecott Copper Corporation
- Alkis S. Rappas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Nickel recovery employing carbonyl ferrates
- Patent number 4,128,416
- Issue date Dec 5, 1978
- Kennecott Copper Corporation
- Alkis S. Rappas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Winning nickel and cobalt with mercaptide extractants and carbon mo...
- Patent number 4,097,272
- Issue date Jun 27, 1978
- Kennecott Copper Corporation
- Alkis S. Rappas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Continuous recovery of copper metal from acidic solutions
- Patent number 4,095,975
- Issue date Jun 20, 1978
- Kennecott Copper Corporation
- Alkis S. Rappas
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Separation and recovery of copper metal from ammoniacal solutions
- Patent number 4,047,940
- Issue date Sep 13, 1977
- Kennecott Copper Corporation
- Alkis S. Rappas
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Low temperature and pressure continuous reduction of copper in acid...
- Patent number 4,038,070
- Issue date Jul 26, 1977
- Kennecott Copper Corporation
- Alkis S. Rappas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Alkis S. Rappas

Person

Patents Grantslast 30 patents

Alkali metal mercaptide solvent extraction of cobalt, nickel

Nickel and cobalt solvent extraction with mercaptides

Amino-thiol nickel and cobalt solvent extraction

Nickel recovery employing carbonyl ferrates

Winning nickel and cobalt with mercaptide extractants and carbon mo...

Continuous recovery of copper metal from acidic solutions

Separation and recovery of copper metal from ammoniacal solutions

Low temperature and pressure continuous reduction of copper in acid...