3898033

Information

• Patent Grant
• 3898033

• References
• Source

• Patent Number

  3,898,033

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1975
  49 years ago

• CPC

  • D21H21/28 - Colorants; Pigments or opacifying agents
  • C09B33/056 - the coupling component being a bis-(naphthol-urea)
  • C09B67/0073 - Preparations of acid or reactive dyes in liquid form
  • D06P3/6008 - using acid dyes
  • Y10S8/918 - Cellulose textile
  • Y10S8/919 - Paper
  • Y10S534/01 - Mixtures of azo compounds

• US Classifications

  • 008 - Bleaching and dyeing
  • 534 - Organic compounds