Patents Represented by Attorney R. A. Armitage

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  • Stable prostaglandin E gels utilizing colloidal silicon dioxide as a gel-forming agent
    Patent number: 4680312
    Abstract: The present invention provides an improved class of stable gels of prostaglandin E compounds prepared from solutions of prostaglandin E compounds in a pharmaceutically acceptable, stabilizing organic solvent, e.g., triacetin, gelled by the addition of colloidal silicon dioxide.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: July 14, 1987
    Assignee: The Upjohn Company
    Inventor: Brian S. Johnson
  • 19-Hydroxy-6-oxo-PGF.sub.1 amides
    Patent number: 4312997
    Abstract: The present invention provides novel 19-hydroxy-6-oxo-PGF.sub.1 amides which are useful for pharmacological purposes, e.g., anti-asthmatic indications.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: January 26, 1982
    Assignee: The Upjohn Company
    Inventor: John C. Sih