3472670

Information

• Patent Grant
• 3472670

• References
• Source

• Patent Number

  3,472,670

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1969
  56 years ago

• CPC

  • C07D487/22 - in which the condensed system contains four or more hetero rings
  • C08K5/0041 - Optical brightening agents, organic pigments
  • D01F2/16 - Addition of dyes to the spinning solution

• US Classifications

  • 106 - Compositions: coating or plastic
  • 264 - Plastic and nonmetallic article shaping or treating: processes