Patents by Inventor Philip R. J. Smith

Philip R. J. Smith 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).

  • Freeze-drying process and apparatus
    Patent number: 5964043
    Abstract: A process and apparatus for freeze drying of liquid material in a vessel in which the vessels are moved automatically through various stages including loading vessels onto racks, washing vessels in an inverted position, sterilizing vessels and racks, filling vessels with a liquid material, rotating the vessels and the liquid material contained within each vessel at a speed that allows the liquid to form a shell against the inner surface of the vessel, subjecting the vessels and the liquid material contained therein to freezing conditions sufficient to freeze the material into the form of a shell and then moving the rack and the vessels containing the frozen material through a vacuum drying chamber in which the frozen liquid material is dried.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: October 12, 1999
    Assignee: Glaxo Wellcome Inc.
    Inventors: Dominic M. A. Oughton, Philip R. J. Smith, Donald B. A. MacMichael