3519429

Information

• Patent Grant
• 3519429

• References
• Source

• Patent Number

  3,519,429

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1970
  55 years ago

• CPC

  • C09B43/132 - having the carboxylic group directly attached to an aromatic carbocyclic ring
  • C07D231/28 - Two oxygen or sulfur atoms
  • C07D231/32 - Oxygen atoms
  • C07D231/52 - Oxygen atom in position 3 and nitrogen atom in position 5, or vice-versa
  • C07D311/72 - 3,4-Dihydro-derivatives having in position 2 at least one methyl radical and in position 6 an oxygen atom
  • C09B43/00 - Preparation of azo dyes from other azo compounds
  • G03C7/384 - in pyrazolone rings

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 548 - Organic compounds