3227554

Information

• Patent Grant
• 3227554

• References
• Source

• Patent Number

  3,227,554

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1966
  58 years ago

• CPC

  • C07D257/04 - Five-membered rings
  • C07C323/63 - the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups
  • C07D231/26 - 1-Phenyl-3-methyl-5- pyrazolones, unsubstituted or substituted on the phenyl ring
  • C07D231/32 - Oxygen atoms
  • C07D231/34 - with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached in position 4
  • C07D231/36 - with hydrocarbon radicals, substituted by hetero atoms, attached in position 4
  • C07D231/52 - Oxygen atom in position 3 and nitrogen atom in position 5, or vice-versa
  • C07D249/18 - Benzotriazoles
  • C07D277/74 - Sulfur atoms substituted by carbon atoms
  • C07D307/80 - Radicals substituted by oxygen atoms
  • C07D333/34 - Sulfur atoms
  • C07F3/12 - Aromatic substances containing mercury
  • C09B11/06 - Hydroxy derivatives of triarylmethanes in which at least one OH group is bound to an aryl nucleus and their ethers or esters
  • C09B11/26 - Triarylmethane dyes in which at least one of the aromatic nuclei is heterocyclic
  • C09B31/061 - containing acid groups
  • C09B31/078 - containing acid groups
  • C09B35/04 - the tetrazo component being a benzene derivative
  • C09B39/00 - Other azo dyes prepared by diazotising and coupling
  • G03C7/3003 - Materials characterised by the use of combinations of photographic compounds known as such, or by a particular location in the photographic element
  • G03C7/305 - Substances liberating photographically active agents
  • G03C7/30552 - Mercapto
  • G03C7/3335 - containing an azo chromophore
  • G03C8/08 - the substances transferred by diffusion consisting of organic compounds
  • G03C7/30541 - characterised by the released group
  • Y10S430/158 - Development inhibitor releaser, DIR

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 548 - Organic compounds
  • 562 - Organic compounds
  • 564 - Organic compounds