3855391

Information

• Patent Grant
• 3855391

• References
• Source

• Patent Number

  3,855,391

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1974
  50 years ago

• CPC

  • C04B28/144 - the synthetic calcium sulfate being a flue gas desulfurization product
  • B01D53/501 - by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
  • C01F11/464 - Sulfates of Ca from gases containing sulfur oxides
  • C04B11/02 - Methods and apparatus for dehydrating gypsum
  • Y02P20/129 - Energy recovery

• US Classifications

  • 423 - Chemistry of inorganic compounds
  • 106 - Compositions: coating or plastic