2171427

Information

• Patent Grant
• 2171427

• References
• Source

• Patent Number

  2,171,427

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1939
  85 years ago

• CPC

  • D21H21/143 - Agents preventing ageing of paper
  • B65D65/20 - with provision for excluding light of a particular wavelength
  • C08J7/065 - Low-molecular-weight organic substances
  • C08K5/3492 - Triazines
  • C08K5/42 - Sulfonic acids Derivatives thereof

• US Classifications

  • 106 - Compositions: coating or plastic
  • 008 - Bleaching and dyeing
  • 162 - Paper making and fiber liberation
  • 530 - Chemistry: natural resins or derivatives
  • 544 - Organic compounds