3732141

Information

• Patent Grant
• 3732141

• References
• Source

• Patent Number

  3,732,141

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1973
  51 years ago

• CPC

  • B41M5/1363 - Leuco dyes forming a complex with a metal cation
  • B41M5/124 - using pressure to make a masked colour visible
  • C08G8/00 - Condensation polymers of aldehydes or ketones with phenols only
  • C08L61/06 - of aldehydes with phenols
  • C08L83/04 - Polysiloxanes
  • Y10T428/2984 - Microcapsule with fluid core [includes liposome]

• US Classifications

  • 503 - Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 346 - Recorders
  • 428 - Stock material or miscellaneous articles