3926634

Information

• Patent Grant
• 3926634

• References
• Source

• Patent Number

  3,926,634

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1975
  49 years ago

• CPC

  • C07D209/48 - with oxygen atoms in positions 1 and 3
  • C07D231/22 - with aryl radicals attached to ring nitrogen atoms
  • C07D231/32 - Oxygen atoms
  • C07D231/48 - with hydrocarbon radicals attached to said nitrogen atom
  • C07D231/52 - Oxygen atom in position 3 and nitrogen atom in position 5, or vice-versa
  • C07D233/78 - Radicals substituted by oxygen atoms
  • C07D263/44 - Two oxygen atoms
  • G03C7/3212 - Couplers characterised by a group not in coupling site

• US Classifications

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