2242469

Information

• Patent Grant
• 2242469

• References
• Source

• Patent Number

  2,242,469

• Date Filed

  Not available

• Date Issued

  Tuesday, May 20, 1941
  83 years ago

• CPC

  • C09B47/062 - having alkyl radicals linked directly to the Pc skeleton; having carboxylic groups directly linked to the skeleton
  • C09B47/065 - having -COOH or -SO3H radicals or derivatives thereof, directly linked to the skeleton

• US Classifications

  • 540 - Organic compounds
  • 562 - Organic compounds