2342643

Information

• Patent Grant
• 2342643

• References
• Source

• Patent Number

  2,342,643

• Date Filed

  Not available

• Date Issued

  Tuesday, February 29, 1944
  80 years ago

• CPC

  • D21H23/30 - Pretreatment of the paper
  • D06M13/02 - with hydrocarbons
  • D06M13/432 - Urea, thiourea or derivatives thereof
  • D06M15/70 - combined with mechanical treatment
  • D21H5/0007 - Pretreatment of paper to which liquids or other fluent materials are to be applied
  • D21H5/0022 - treating medium being a gas or vapour
  • D21H23/44 - Treatment with a gas or vapour

• US Classifications

  • 427 - Coating processes