Ammonia extraction of gold and silver from ores and other materials

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5114687
SERIAL NO

07627502

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Gold and silver are extracted from their elemental state or from complex ores and alloys by leaching them with a solution containing ammonia, ammonium salts and one or more oxidants. The process is particularly effective for refractory gold ores including sulfide and carbonaceous ores.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY;SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY, SOUTH DAKOTA INSTITUTION OF HIGHER EDUCATION

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Kenneth N Rapid City, SD 7 179
Meng, Xinghui Rapid City, SD 5 122

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation