3139429

Information

• Patent Grant
• 3139429

• References
• Source

• Patent Number

  3,139,429

• Date Filed

  Not available

• Date Issued

  Tuesday, June 30, 1964
  61 years ago

• CPC

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

• US Classifications

  • 544 - Organic compounds
  • 546 - Organic compounds
  • 548 - Organic compounds
  • 552 - Organic compounds