Patents by Inventor Sidney Edwin Smith

Sidney Edwin Smith 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).

  • Cell cultures
    Patent number: 4021302
    Abstract: Cell culture comprising a novel cell strain in suitable nutrient medium, wherein the novel cell strain is produced by disaggregated feline embryo tissue cell and serially passaging the same from about the 20th to about the 48th passage level, so as to be cultured and subcultured with the resultant cell strains remaining substantially diploid, typically fibroblastic and substantially free from morphological transformations. Subculturing is facilitated by treatment of a confluent sheet of the disaggregated cells chelating agent before each transfer into a new batch of nutrient medium.
    Type: Grant
    Filed: August 20, 1975
    Date of Patent: May 3, 1977
    Assignee: Burroughs Wellcome & Co., Inc.
    Inventors: Sidney Edwin Smith, Kevin Joseph O'Reilly, John Prydie