3843321

Information

• Patent Grant
• 3843321

• References
• Source

• Patent Number

  3,843,321

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • D21C5/022 - Chemicals therefor
  • D06L3/16 - combined with cleaning or washing
  • D21C5/02 - Working-up waste paper
  • Y02W30/648 - Recovery of cellulose by working-up waste paper

• US Classifications

  • 008 - Bleaching and dyeing