1859212

Information

• Patent Grant
• 1859212

• References
• Source

• Patent Number

  1,859,212

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1932
  92 years ago

• CPC

  • C09B3/26 - from dibenzanthronyls
  • C07C49/76 - Ketones containing a keto group bound to a six-membered aromatic ring
  • C09B3/30 - Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus

• US Classifications

  • 552 - Organic compounds