2105978

Information

• Patent Grant
• 2105978

• References
• Source

• Patent Number

  2,105,978

• Date Filed

  Not available

• Date Issued

  Tuesday, January 18, 1938
  87 years ago

• CPC

  • C09B3/54 - Preparation from starting materials already containing the dibenzopyrenequinone nucleus
  • C09B3/30 - Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus

• US Classifications

  • 552 - Organic compounds