3769305

Information

• Patent Grant
• 3769305

• References
• Source

• Patent Number

  3,769,305

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1973
  51 years ago

• CPC

  • C09B5/16 - Benz-diazabenzanthrones
  • C09B1/14 - Dyes containing ether groups
  • C09B1/20 - Preparation from starting materials already containing the anthracene nucleus
  • C09B1/22 - Dyes with unsubstituted amino groups
  • C09B1/26 - Dyes with amino groups substituted by hydrocarbon radicals
  • C09B1/50 - Amino-hydroxy-anthraquinones Ethers and esters thereof
  • C09B1/542 - Anthraquinones with aliphatic, cycloaliphatic, araliphatic or aromatic ether groups
  • C09B1/58 - with mercapto groups substituted by aliphatic, cycloaliphatic, araliphatic or aryl radicals
  • C09B5/14 - Benz-azabenzanthrones (anthrapyridones)
  • C09B5/2472 - 1,3 dioxo derivatives
  • C09B56/12 - Anthraquinone-azo dyes
  • C09B62/445 - Anthracene dyes

• US Classifications

  • 552 - Organic compounds
  • 534 - Organic compounds