3227550

Information

• Patent Grant
• 3227550

• References
• Source

• Patent Number

  3,227,550

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1966
  59 years ago

• CPC

  • G03C8/10 - of dyes or their precursors
  • C07C45/71 - being hydroxy groups
  • C07C47/575 - containing ether groups, groups, groups, or groups
  • C07D231/26 - 1-Phenyl-3-methyl-5- pyrazolones, unsubstituted or substituted on the phenyl ring
  • C07D231/28 - Two oxygen or sulfur atoms
  • C07D231/32 - Oxygen atoms
  • C07D231/52 - Oxygen atom in position 3 and nitrogen atom in position 5, or vice-versa
  • 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
  • C09B31/078 - containing acid groups
  • C09B35/04 - the tetrazo component being a benzene derivative
  • Y10S430/159 - Development dye releaser, DDR

• US Classifications

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