Patents by Inventor Stefan A. Weiss

Stefan A. Weiss 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).

  • Patent number: 4072565
    Abstract: Growth of cells in tissue culture and virus vaccine production in tissue culture in the absence of serum are disclosed. The cells in tissue culture are grown initially in a chemically defined medium containing protamine zinc insulin, and the protamine zinc insulin medium is removed before virus propagation. Supplementation with serum or serum fractions can be eliminated entirely; and improved virus production in a serum free system can be obtained.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: February 7, 1978
    Assignee: The Dow Chemical Company
    Inventors: Stefan A. Weiss, Harry L. Torney, William J. Caldwell
  • Patent number: 4024020
    Abstract: A method of culturing cells in which the cells are fixed on a polyacrylonitrile surface.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: May 17, 1977
    Assignee: Monsanto Company
    Inventors: Stefan A. Weiss, John H. Johnson