Patents by Inventor Hugh A. Risley

Hugh A. Risley 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: 3983005
    Abstract: An integral analytical element for analysis of liquids for their cholesterol content is disclosed. The element is of the type which comprises at least two superposed layers including a spreading layer and a reagent layer in fluid contact and, optionally, a support. Cholesterol oxidase and a composition for the hydrolysis of cholesterol esters comprising lipase having cholesterol esterase activity and protease are included in the element such that cholesterol esters contained in a sample applied to the spreading layer are saponified to free cholesterol and free cholesterol is decomposed in the presence of cholesterol oxidase to produce a detectable change related to the total cholesterol content of the sample.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: September 28, 1976
    Assignee: Eastman Kodak Company
    Inventors: Charles T. Goodhue, Hugh A. Risley, Roy E. Snoke, Gary M. Underwood