2130530

Information

• Patent Grant
• 2130530

• References
• Source

• Patent Number

  2,130,530

• Date Filed

  Not available

• Date Issued

  Tuesday, September 20, 1938
  86 years ago

• CPC

  • D21H23/30 - Pretreatment of the paper
  • D21H5/0007 - Pretreatment of paper to which liquids or other fluent materials are to be applied
  • D21H19/34 - comprising cellulose or derivatives thereof
  • D21H23/00 - Processes or apparatus for adding material to the pulp or to the paper
  • D21H25/06 - of impregnated or coated paper

• US Classifications

  • 427 - Coating processes
  • 162 - Paper making and fiber liberation