3804678

Information

• Patent Grant
• 3804678

• References
• Source

• Patent Number

  3,804,678

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1974
  50 years ago

• CPC

  • C23C30/00 - Coating with metallic material characterised only by the composition of the metallic material
  • C21D3/08 - Extraction of nitrogen
  • C22C32/0068 - only nitrides
  • C22C38/50 - with titanium or zirconium
  • C23C8/26 - of ferrous surfaces
  • E04B2/58 - with elongated members of metal

• US Classifications

  • 148 - Metal treatment