Patents by Inventor Gerry R. Cysewski

Gerry R. Cysewski 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).

  • Process for culturing a microalga, and extracting a polysaccharide therefrom
    Patent number: 4417415
    Abstract: Porphyridium cruentum is cultured in an enriched seawater medium using a high initial cell concentration until the productivity of polysaccharide production by the alga is maximized. The whole culture is then extracted by making the culture strongly alkaline, and heat treating it. The culture is cooled, acidified and the polysaccharide precipitated by addition of a water-miscible organic solvent such as ethanol. Very high yields of polysaccharide are obtained, in excess of 4.5 grams per liter of culture.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: November 29, 1983
    Assignee: Battelle Development Corporation
    Inventors: Gerry R. Cysewski, Daniel B. Anderson