3726756

Information

• Patent Grant
• 3726756

• References
• Source

• Patent Number

  3,726,756

• Date Filed

  Not available

• Date Issued

  Tuesday, April 10, 1973
  51 years ago

• CPC

  • D21C3/06 - sulfur dioxide sulfurous acid bisulfites sulfites
  • D21C1/06 - with alkaline reacting compounds
  • D21C3/224 - Use of means other than pressure and temperature

• US Classifications

  • 162 - Paper making and fiber liberation