3320234

Information

• Patent Grant
• 3320234

• References
• Source

• Patent Number

  3,320,234

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1967
  57 years ago

• CPC

  • C09B57/002 - Aminoketone dyes
  • C07D213/38 - having only hydrogen, hydrocarbon radicals attached to the substituent nitrogen atom
  • C07D213/53 - Nitrogen atoms
  • C07D231/56 - Benzopyrazoles Hydrogenated benzopyrazoles
  • C07D277/58 - Nitro radicals
  • C07D277/66 - with aromatic rings or ring systems directly attached in position 2
  • C07D277/82 - Nitrogen atoms
  • C09B43/00 - Preparation of azo dyes from other azo compounds
  • C09B43/006 - by introduction of hydrocarbon radicals on C-atom of azo dye
  • C09B53/00 - Quinone imides
  • C09B57/00 - Other synthetic dyes of known constitution

• US Classifications

  • 534 - Organic compounds