3690913

Information

• Patent Grant
• 3690913

• References
• Source

• Patent Number

  3,690,913

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • C22F1/008 - Using a protective surface layer
  • C21D1/68 - Temporary coatings or embedding materials applied before or during heat treatment
  • C21D1/70 - while heating or quenching
  • C22F1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
  • C23C24/08 - by application of heat or pressure and heat
  • C23D3/00 - Chemical treatment of the metal surfaces prior to coating
  • C23D5/00 - Coating with enamels or vitreous layers

• US Classifications

  • 427 - Coating processes