1897430

Information

• Patent Grant
• 1897430

• References
• Source

• Patent Number

  1,897,430

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1933
  91 years ago

• CPC

  • C09B1/363 - the acyl groups being residues of a dicarboxylic compound forming a bridge between two anthraquinones

• US Classifications

  • 549 - Organic compounds
  • 544 - Organic compounds
  • 548 - Organic compounds
  • 552 - Organic compounds