Patents by Inventor Matthew W. Gray

Matthew W. Gray 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).

  • Compositions and processes for the sustained release of drugs
    Patent number: 5328697
    Abstract: The present invention relates to compositions for the sustained release of drugs and to methods for the production of such compositions. In one embodiment, somatotropin is layered onto non-pareil seeds, which, in turn are sprayed with a glycine solution. Next, a coating of a wax mixture is applied.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: July 12, 1994
    Assignee: Mallinckrodt Veterinary, Inc.
    Inventors: Siva N. Raman, Matthew W. Gray, Rodger L. Smith