3443939

Information

• Patent Grant
• 3443939

• References
• Source

• Patent Number

  3,443,939

• Date Filed

  Not available

• Date Issued

  Tuesday, May 13, 1969
  56 years ago

• CPC

  • G03C8/12 - characterised by the releasing mechanism
  • C07C205/59 - the carbon skeleton being further substituted by singly-bound oxygen atoms
  • C09B1/515 - N-alkyl, N-aralkyl or N-cycloalkyl derivatives
  • C09B1/545 - Anthraquinones with aliphatic, cycloaliphatic or araliphatic ether groups
  • C09B43/00 - Preparation of azo dyes from other azo compounds
  • C09B43/32 - by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines by reacting keto-groups with amines
  • C09B43/325 - by reacting sulfonic acids with amines
  • C09B45/16 - containing chromium
  • G03C8/045 - with the formation of a subtractive dye image
  • G03C8/08 - the substances transferred by diffusion consisting of organic compounds

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof