2143490

Information

• Patent Grant
• 2143490

• References
• Source

• Patent Number

  2,143,490

• Date Filed

  Not available

• Date Issued

  Tuesday, January 10, 1939
  86 years ago

• CPC

  • C07C235/78 - the carbon skeleton containing rings
  • A23J3/32 - using chemical agents
  • C07C235/72 - with the carbon atoms of the carboxamide groups bound to acyclic carbon atoms

• US Classifications

  • 562 - Organic compounds
  • 008 - Bleaching and dyeing