3677741

Information

• Patent Grant
• 3677741

• References
• Source

• Patent Number

  3,677,741

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1972
  52 years ago

• CPC

  • C22B34/32 - Obtaining chromium
  • C01B25/305 - Preparation from phosphorus-containing compounds by alkaline treatment
  • C01G31/02 - Oxides
  • C01G37/14 - Chromates Bichromates
  • C05B7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
  • C22B5/00 - General methods of reducing to metals
  • C22B7/001 - Dry processes
  • C22B34/22 - Obtaining vanadium
  • Y02P10/214 - by pyro metallurgy

• US Classifications

  • 075 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
  • 420 - Alloys or metallic compositions
  • 423 - Chemistry of inorganic compounds