3663256

Information

• Patent Grant
• 3663256

• References
• Source

• Patent Number

  3,663,256

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1972
  52 years ago

• CPC

  • C08G8/16 - with amino- or nitrophenols
  • B41M5/155 - Colour-developing components
  • C08G8/14 - with halogenated phenols
  • C08G8/24 - with mixtures of two or more phenols which are not covered by only one of the groups C08G8/10 - C08G8/20
  • Y10T428/31964 - Paper

• US Classifications

  • 503 - Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor
  • 428 - Stock material or miscellaneous articles
  • 528 - Synthetic resins or natural rubbers