3843622

Information

• Patent Grant
• 3843622

• References
• Source

• Patent Number

  3,843,622

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • C09B1/26 - Dyes with amino groups substituted by hydrocarbon radicals
  • C09B1/002 - containing onium groups
  • C09B1/50 - Amino-hydroxy-anthraquinones Ethers and esters thereof
  • C09B23/143 - the ethylene chain carrying a COOH or a functionally modified derivative, e.g.-CN, -COR, -COOR, -CON=, C6H5-CH=C-CN
  • C09B44/02 - containing ammonium groups not directly attached to an azo group
  • C09B44/04 - from coupling components containing amino as the only directing group
  • C09B51/00 - Nitro or nitroso dyes
  • C09B69/002 - Hydrazinium group

• US Classifications

  • 534 - Organic compounds
  • 552 - Organic compounds