3819632

Information

• Patent Grant
• 3819632

• References
• Source

• Patent Number

  3,819,632

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1974
  50 years ago

• CPC

  • C07D471/06 - Peri-condensed systems
  • C07C63/48 - containing three or more carboxyl groups all bound to carbon atoms of the condensed ring system
  • C07C65/15 - with carboxyl groups on a condensed ring system containing more than two rings
  • C07C65/24 - polycyclic
  • C07C205/57 - having nitro groups and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
  • C07C309/00 - Sulfonic acids Halides, esters, or anhydrides thereof
  • C09B5/2436 - only nitrogen-containing hetero rings
  • C09B57/12 - Perinones
  • Y10S8/922 - Polyester fiber

• US Classifications

  • 546 - Organic compounds
  • 008 - Bleaching and dyeing
  • 524 - Synthetic resins or natural rubbers
  • 549 - Organic compounds