3413257

Information

• Patent Grant
• 3413257

• References
• Source

• Patent Number

  3,413,257

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1968
  56 years ago

• CPC

  • C07D498/22 - in which the condensed system contains four or more hetero rings
  • C08G63/6854 - derived from polycarboxylic acids and polyhydroxy compounds
  • C08K5/0041 - Optical brightening agents, organic pigments
  • C08L67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
  • C09B1/32 - substituted by aryl groups
  • C09B1/42 - the acyl groups being residues of an aromatic carboxylic acid
  • C09B1/51 - N-substituted amino-hydroxy anthraquinone
  • C09B1/585 - substituted by aryl radicals
  • C09B3/48 - Amino derivatives
  • C09B5/00 - Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
  • C09B19/02 - Bisoxazines prepared from aminoquinones
  • C09B69/00 - Dyes not provided for by a single group of this subclass

• US Classifications

  • 523 - Synthetic resins or natural rubbers