3829436

Information

• Patent Grant
• 3829436

• References
• Source

• Patent Number

  3,829,436

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1974
  50 years ago

• CPC

  • G03C1/12 - Methine and polymethine dyes
  • C07D209/14 - Radicals substituted by nitrogen atoms, not forming part of a nitro radical
  • C07D209/96 - Spiro-condensed ring systems
  • C09B29/3613 - from an indole
  • C09B33/12 - in which the coupling component is a hetero-cyclic compound
  • G03C5/3028 - Heterocyclic compounds
  • G03C7/30 - Colour processes using colour-coupling substances Materials therefor Preparing or processing such materials

• US Classifications

  • 548 - Organic compounds
  • 534 - Organic compounds