Patents by Inventor Judith W. Swanson

Judith W. Swanson 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).

  • Colorimetric biological assay
    Patent number: 4849347
    Abstract: Lactic acid produced by cells in culture is detected and used in a bioassay to determine cell growth and vitality. Lactic acid is detected by coupling the lactate dehydrogenase conversion of lactic acid to pyruvic acid to a reaction using micotinamide adenine dinucleotide in reduced form (NADH) to reduce a tetrazolium dye. The process can be used to serve as a bioassay for measuring biologically active compounds, particularly lymphokines.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: July 18, 1989
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Philip C. Familletti, Judith W. Swanson