3434889

Information

• Patent Grant
• 3434889

• References
• Source

• Patent Number

  3,434,889

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1969
  55 years ago

• CPC

  • C23C22/52 - Treatment of copper or alloys based thereon
  • B64C27/32 - Rotors
  • C23C8/16 - using oxygen-containing compounds
  • C23C22/68 - using aqueous solutions with pH between 6 and 8
  • H05K3/385 - by conversion of the surface of the metal
  • B64C2700/6283 - Rotor construction
  • H05K2201/0355 - Metal foils
  • H05K2203/0315 - Oxidising metal
  • H05K2203/0392 - Pretreatment of metal

• US Classifications

  • 148 - Metal treatment
  • 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
  • 216 - Etching a substrate: processes