3493981

Information

• Patent Grant
• 3493981

• References
• Source

• Patent Number

  3,493,981

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1970
  54 years ago

• CPC

  • D06P1/6429 - bound to a six-membered aromatic carbocyclic ring
  • D06P1/6421 - Compounds containing nitrile groups
  • D06P1/6427 - Compounds containing sulfonamide groups
  • D06P3/76 - using basic dyes
  • Y10S8/927 - Polyacrylonitrile fiber

• US Classifications

  • 008 - Bleaching and dyeing