Patents by Inventor Ladislas Charles Matsch

Ladislas Charles Matsch 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).

  • Phosphate removal from BOD-containing wastewater
    Patent number: 4042493
    Abstract: Activated sludge wastewater treatment process for removing phosphate from BOD-containing wastewater in which phosphate-enriched sludge formed in the aeration zone is settled in a phosphate stripping zone under anaerobic conditions to cause release of phosphate from the sludge solids. The released phosphate is countercurrently stripped from the sludge in the stripping zone by a low phosphate, low solids stripping medium to provide phosphate-lower sludge for recirculation to the aeration zone.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: August 16, 1977
    Assignee: Union Carbide Corporation
    Inventors: Ladislas Charles Matsch, Raymond Francis Drnevich