3773890

Information

• Patent Grant
• 3773890

• References
• Source

• Patent Number

  3,773,890

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1973
  51 years ago

• CPC

  • C22B23/04 - by wet processes
  • C22B1/08 - Chloridising roasting
  • C22B7/009 - General processes for recovering metals or metallic compounds from spent catalysts
  • C22B21/003 - from spent catalysts
  • C22B21/0076 - from spent catalysts
  • C22B23/026 - from spent catalysts
  • C22B34/225 - from spent catalysts
  • C22B34/345 - from spent catalysts
  • Y02P10/214 - by pyro metallurgy
  • Y02P10/224 - of Co or Ni
  • Y02P10/23 - of refractory metals
  • Y02P10/234 - by hydro metallurgy

• US Classifications

  • 423 - Chemistry of inorganic compounds