3834866

Information

• Patent Grant
• 3834866

• References
• Source

• Patent Number

  3,834,866

• Date Filed

  Not available

• Date Issued

  Tuesday, September 10, 1974
  50 years ago

• CPC

  • A61Q5/10 - Preparations for permanently dyeing the hair
  • A61K8/415 - Aminophenols
  • D06P3/12 - preparing azo dyes on the material

• US Classifications

  • 008 - Bleaching and dyeing
  • 564 - Organic compounds