3657328

Information

• Patent Grant
• 3657328

• References
• Source

• Patent Number

  3,657,328

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1972
  52 years ago

• CPC

  • C07C255/00 - Carboxylic acid nitriles
  • C07C55/24 - containing more than three carboxyl groups
  • C07C405/00 - Compounds containing a five-membered ring having two side-chains in ortho position to each other, and having oxygen atoms directly attached to the ring in ortho position to one of the side-chains, one side-chain containing, not directly attached to the ring, a carbon atom having three bonds to hetero atoms with at the most one to halogen, and the other side-chain having oxygen atoms attached in...
  • C07D309/12 - Only hydrogen atoms and one oxygen atom directly attached to ring carbon atoms

• US Classifications

  • 562 - Organic compounds
  • 536 - Organic compounds
  • 544 - Organic compounds
  • 549 - Organic compounds
  • 560 - Organic compounds