3850771

Information

• Patent Grant
• 3850771

• References
• Source

• Patent Number

  3,850,771

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1974
  50 years ago

• CPC

  • D21C5/02 - Working-up waste paper
  • B03B9/06 - specially adapted for refuse
  • C05B3/00 - Fertilisers based essentially on di-calcium phosphate
  • C05B7/00 - Fertilisers based essentially on alkali or ammonium orthophosphates
  • C05F9/00 - Fertilisers from household or town refuse
  • C08L99/00 - Compositions of natural macromolecular compounds or of derivatives thereof not provided for in groups C08L89/00 - C08L97/00
  • D21B1/026 - Separating fibrous materials from waste
  • D21B1/303 - using vibrating devices
  • Y02W30/47 - Anaerobic fermentation
  • Y02W30/648 - Recovery of cellulose by working-up waste paper
  • Y10S162/09 - Uses for paper making sludge

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 106 - Compositions: coating or plastic
  • 162 - Paper making and fiber liberation