Patents by Inventor Berthold Kruger

Berthold Kruger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of treatment of sludge from a flue gas desulfurization plant
    Patent number: 4627970
    Abstract: Desulfurization sludge from a flue-gas scrubber operating with calcium-containing additives is dewatered in a thin layer with precipitatable impurities in the liquid phase being precipitated out by neutralization and collected in a thin layer which is then rinsed. The presence of these precipitated impurities on the gypsum which is recovered by this process has not been found to be detrimental to the use of it as a construction material.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: December 9, 1986
    Assignee: Gottfried Bischoff Bau Kompl. Gasreinigungsund Wasserruckkuhlanlagen GmbH & Co.
    Inventor: Berthold Kruger
  • Method of treating converter gas
    Patent number: 3988422
    Abstract: Sodium carbonate is added to water used to scrub converter gases so that calcium-oxide particles in the gas react with the aqueous sodium carbonate and a thin inactive film of calcium carbonate is formed on the calcium-oxide particles, using carbon dioxide in the gas for the reaction. The coated particles are then separated from the wash water by settling and sedimentation and the wash water is recycled with the addition of more sodium carbonate and water.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: October 26, 1976
    Assignee: Gottfried Bischoff Bau Kompl. Gasreinigungs- und Wasserruckkuhlungsanlage n KG
    Inventor: Berthold Kruger