1790887

Information

• Patent Grant
• 1790887

• References
• Source

• Patent Number

  1,790,887

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1931
  93 years ago

• CPC

  • C09B5/48 - Bis-anthraquinonediazines (indanthrone)
  • C09B5/56 - Preparation from starting materials already containing the indanthrene nucleus

• US Classifications

  • 544 - Organic compounds