3121755

Information

• Patent Grant
• 3121755

• References
• Source

• Patent Number

  3,121,755

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1964
  60 years ago

• CPC

  • C09B1/42 - the acyl groups being residues of an aromatic carboxylic acid
  • C08K5/3412 - having one nitrogen atom in the ring
  • C09B1/264 - sulfonated
  • C09B1/30 - sulfonated
  • C09B1/34 - sulfonated
  • C09B5/2472 - 1,3 dioxo derivatives
  • C09B5/62 - Cyclic imides or amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, or perylene series

• US Classifications

  • 552 - Organic compounds
  • 008 - Bleaching and dyeing