3331689

Information

• Patent Grant
• 3331689

• References
• Source

• Patent Number

  3,331,689

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1967
  57 years ago

• CPC

  • C09B41/00 - Special methods of performing the coupling reaction
  • C07C65/03 - monocyclic and having all hydroxy or O-metal groups bound to the ring
  • C07C65/05 - o-Hydrocy carboxylic acids
  • C07C65/105 - polycyclic
  • C07C65/11 - with carboxyl groups on a condensed ring system containing two rings
  • G03C1/58 - Coupling substances therefor
  • G03C1/585 - Precursors

• US Classifications

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