JOHN JOSEPH STEPHENS, MD
Osteopathic Medicine at Limewood Dr, Tucson, AZ

License number

Arizona 19919

Professional information

See more information about JOHN JOSEPH STEPHENS at trustoria.com

Work:

Home Helpers Toshiba America Electronic Components - Tucson, AZ
Business Development Director of Global EMS Sales Sharp Microelectronics of the Americas - Camas, WA
Sr. Business Development Manager EMS Sales Samsung Semiconductor - Huntsville, AL
S.E. Regional Account Manager North America account management of SCI Inc - Huntsville, AL
Regional Sales Manager Toshiba America Electronic Components - Huntsville, AL Toshiba America Electronc Components - Irvine, CA
SRAM Product Marketing Manager

Education:

Southwest Missouri State University - Springfield, MO
BS in Natural Sciences US Army Helicopter Flight School
sales and marketing management

John Stephens - Oro Valley, AZ

Work:

Home Helpers
Owner and CEO Toshiba America Electronic Components - Tucson, AZ
Business Development Director of Global EMS Sales Sharp Microelectronics of the Americas - Camas, WA
Sr. Business Development Manager EMS Sales Samsung Semiconductor - Huntsville, AL
S.E. Regional Account Manager Toshiba America Electronic Components - Huntsville, AL
Major Account Manager Toshiba America Electronic Components - Huntsville, AL
Major Account Manager Toshiba America Electronic Components - Irvine, CA
SRAM Product Marketing Manager

Education:

Southwest Missouri State University - Springfield, MO
BS in Natural Sciences US Army Helicopter Flight School
sales and marketing management

Skills:

Sales Management, Helicopter Test Pilot, Marketing Management, Small business owner

Sulfidization Reaction

US Patent:

4073479, Feb 14, 1978

Filed:

Sep 29, 1976

Appl. No.:

5/727648

Inventors:

Martin C. Kuhn - Tucson AZ
John A. Stephens - Tucson AZ
Michael J. Noakes - Tucson AZ
Allen D. Rovig - Butte MT

Assignee:

The Anaconda Company - Tucson AZ

International Classification:

F27B 714

US Classification:

266173

Abstract:

The process of sulfidizing an acid copper leach pulp prior to flotation recovery of the copper therein comprising adding to and admixing with said pulp in a reaction zone an ionizable sulfide material, said sulfide material being added in an amount proportional to the amount of copper passing through said zone so that the sulfidization reaction is completed within about 30 seconds and the pulp leaving said zone has an aqueous copper concentration of from about 0. 014 to 0. 024 gram per liter and a reactor for such process comprising elongated tubular means, shaft means mounted in said tubular means, and a plurality of blade members attached to said shaft, said blade members being spaced along said shaft at approximately 30. degree. pitch angles relative to the axial direction of the shaft and there being a reverse pitch direction of certain of said blades at predetermined distances along the length of said shaft.

Sulfidization Reaction

US Patent:

4008072, Feb 15, 1977

Filed:

Sep 16, 1974

Appl. No.:

5/506570

Inventors:

Martin C. Kuhn - Tucson AZ
John A. Stephens - Tucson AZ
Michael J. Noakes - Tucson AZ
Allen D. Rovig - Butte MT

Assignee:

The Anaconda Company - New York NY

International Classification:

C22B 1508

US Classification:

75 1R

Abstract:

The process of sulfidizing an acid copper leach pulp prior to flotation recovery of the copper therein comprising adding to and admixing with said pulp in a reaction zone an ionizable sulfide material, said sulfide material being added in an amount proportional to the amount of copper passing through said zone so that the sulfidization reaction is completed within about 30 seconds and the pulp leaving said zone has an aqueous copper concentration of from about 0. 014 to 0. 024 gram per liter and a reactor for such process comprising elongated tubular means, shaft means mounted in said tubular means, and a plurality of blade members attached to said shaft, said blade members being spaced along said shaft at approximately 30. degree. pitch angles relative to the axial direction of the shaft and there being a reverse pitch direction of a certain of said blades at predetermined distances along the length of said shaft.