Patents by Inventor Ralph E. Bolstad

Ralph E. Bolstad 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).

  • Liquid stable triglyceride reagent system
    Patent number: 5221615
    Abstract: A stable triglyceride assay solution for use with a chromogen system is comprised of a solution buffered with a Zwitterionic buffering agent and/or TRIS and stabilized with sortibol, gelatin, and ammonium sulfate. Solution pH is in the range of from 6.8 to 8.0. The functional enzymes are lipase, glyercol kinase, and glycerol phosphate oxidase. The preferred chromogen system is based on the inclusion of 4-aminoantipyrine for use in combination with oxidase to yield a detectable chromogen compound.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: June 22, 1993
    Assignee: Ivan E. Modrovich
    Inventors: Ivan E. Modrovich, Ralph E. Bolstad, Paul F. Wegfahrt, Jr.