2183629

Information

• Patent Grant
• 2183629

• References
• Source

• Patent Number

  2,183,629

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1939
  85 years ago

• CPC

  • C09B3/30 - Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus
  • C09B3/36 - by etherification of hydroxy compounds

• US Classifications

  • 552 - Organic compounds