Foam Control Patents (Class 435/812)
  • Cell culture method
    Patent number: 4224413
    Abstract: An apparatus for culturing cells is produced which comprises a vessel, a solid porous matrix within the vessel which permits the adherence of cells, a foam generator located to supply foam to at least part of the surface of the solid porous matrix and means for removing liquid from the vessel.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: September 23, 1980
    Assignee: Beecham Group Limited
    Inventor: Colin Burbidge
  • Fermentation process for improved oxygen utilization
    Patent number: 4169010
    Abstract: A continuous fermentation process for the production of single cell protein employing fermentation apparatus for improved oxygen utilization comprising a fermentation section and an upper contiguous absorber section communicating therewith wherein a gas contacting zone is employed to contact cooled recycled fermentation liquid and make up nutrients with partially oxygen depleted oxygenating gas in countercurrent flow whereby the oxygen content of the fermentation liquid is enriched.
    Type: Grant
    Filed: April 11, 1978
    Date of Patent: September 25, 1979
    Assignee: Phillips Petroleum Company
    Inventor: Stanley J. Marwil