2194857

Information

• Patent Grant
• 2194857

• References
• Source

• Patent Number

  2,194,857

• Date Filed

  Not available

• Date Issued

  Tuesday, March 26, 1940
  84 years ago

• CPC

  • C09B35/08 - the tetrazo component being a derivative of biphenyl
  • C09B35/18 - from heterocyclic compounds
  • D06P3/3233 - using dis-polyazo premetallised dyes

• US Classifications

  • 534 - Organic compounds
  • 008 - Bleaching and dyeing