3819802

Information

• Patent Grant
• 3819802

• References
• Source

• Patent Number

  3,819,802

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1974
  50 years ago

• CPC

  • C02F1/5236 - using inorganic agents
  • C01F5/42 - Magnesium sulfites
  • C01F11/48 - Sulfites
  • C02F1/66 - by neutralisation pH adjustment
  • D21C11/02 - of acid, neutral or alkaline sulfite lye

• US Classifications

  • 423 - Chemistry of inorganic compounds
  • 162 - Paper making and fiber liberation