3890142

Information

• Patent Grant
• 3890142

• References
• Source

• Patent Number

  3,890,142

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  49 years ago

• CPC

  • C21B13/0073 - Selection or treatment of the reducing gases
  • C21B13/04 - in retorts
  • C21B13/146 - Multi-step reduction without melting
  • Y02P10/136 - using hydrogen
  • Y02P10/212 - Recovering metals from waste

• US Classifications

  • 075 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures