2067138

Information

• Patent Grant
• 2067138

• References
• Source

• Patent Number

  2,067,138

• Date Filed

  Not available

• Date Issued

  Tuesday, January 5, 1937
  87 years ago

• CPC

  • C07C65/24 - polycyclic
  • C07C63/40 - containing three or more carboxyl groups all bound to carbon atoms of the condensed ring system
  • C07C65/11 - with carboxyl groups on a condensed ring system containing two rings

• US Classifications

  • 549 - Organic compounds
  • 562 - Organic compounds