3432521

Information

• Patent Grant
• 3432521

• References
• Source

• Patent Number

  3,432,521

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1969
  55 years ago

• CPC

  • G03C7/30517 - 2-equivalent couplers
  • C07D231/28 - Two oxygen or sulfur atoms
  • C07D231/44 - Oxygen and nitrogen or sulfur and nitrogen atoms
  • C07D231/46 - Oxygen atom in position 3 or 5 and nitrogen atom in position 4
  • 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

• US Classifications

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