3716525

Information

• Patent Grant
• 3716525

• References
• Source

• Patent Number

  3,716,525

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1973
  51 years ago

• CPC

  • C09B49/00 - Sulfur dyes
  • D06P1/0072 - Heterocyclic compounds
  • D06P1/30 - using sulfur dyes
  • D06P3/8266 - mixtures of fibres containing hydroxyl and nitrile groups
  • D21H21/28 - Colorants; Pigments or opacifying agents

• US Classifications

  • 548 - Organic compounds
  • 008 - Bleaching and dyeing