Patents by Inventor Russell A. Hangos

Russell A. Hangos 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).

  • Clotting assay and reagent therefor
    Patent number: 4455377
    Abstract: Blood clotting function assays are improved by the use of a colloidal silica contact activator made by the process comprising (a) contacting an alkali silicate solution with an ion-exchange material for removing alkali metal ions from the silicate solution, and (b) recovering the colloidally dispersed particles from the ion exchange material.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: June 19, 1984
    Assignee: Cooper Laboratories, Inc.
    Inventors: Suja P. Finnerty, Russell A. Hangos