2993024

Information

• Patent Grant
• 2993024

• References
• Source

• Patent Number

  2,993,024

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1961
  63 years ago

• CPC

  • C07D495/14 - Ortho-condensed systems
  • C08K5/0041 - Optical brightening agents, organic pigments
  • C08K5/34 - Heterocyclic compounds having nitrogen in the ring
  • C09B7/00 - Indigoid Dyes
  • C09B7/02 - Bis-indole indigos
  • C09B7/06 - Indone-thionapthene indigos
  • C09B57/00 - Other synthetic dyes of known constitution

• US Classifications

  • 524 - Synthetic resins or natural rubbers
  • 528 - Synthetic resins or natural rubbers