1853362

Information

• Patent Grant
• 1853362

• References
• Source

• Patent Number

  1,853,362

• Date Filed

  Not available

• Date Issued

  Tuesday, April 12, 1932
  93 years ago

• CPC

  • C09B5/56 - Preparation from starting materials already containing the indanthrene nucleus
  • C07D515/22 - in which the condensed system contains four or more hetero rings

• US Classifications

  • 544 - Organic compounds