Patents by Inventor David J. Greenleaf

David J. Greenleaf 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).

  • Medicinal aerosol formulations
    Patent number: 5225183
    Abstract: A self-propelling aerosol formulation which may be free from CFC's which comprises a medicament, 1,1,1,2-tetrafluoroethane, a surface active agent and at least one compound having a higher polarity than 1,1,1,2-tetrafluoroethane.
    Type: Grant
    Filed: January 30, 1991
    Date of Patent: July 6, 1993
    Assignee: Riker Laboratories, Inc.
    Inventors: Tarlochan S. Purewal, David J. Greenleaf