Patents by Inventor Robert Cassels

Robert Cassels 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).

  • Protein C enzyme derivatives
    Patent number: 4604285
    Abstract: Known disadvantages of protein Ca are overcome or reduced by acylating the protein to form a derivative which will gradually hydrolyse in vivo to regenerate the active enzyme. The enzyme derivative comprises protein Ca in which the active site essential for anti-coagulant activity is blocked by an acyl group removable in vivo by enzymatic hydrolysis to provide a sustained and controlled release of protein Ca, preferred acyl groups being optionally substituted benzoyl or acryloyl groups.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: August 5, 1986
    Assignee: Beecham Group p.l.c.
    Inventors: Richard A. Smith, Robert Cassels