2823998

Information

• Patent Grant
• 2823998

• References
• Source

• Patent Number

  2,823,998

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1958
  66 years ago

• CPC

  • G03C7/3231 - Couplers containing an indazolone ring

• US Classifications

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