Patents by Inventor Marc J. Thompson

Marc J. Thompson 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).

  • Shelf arrangement for freeze drying apparatus
    Patent number: 4325193
    Abstract: A shelf arrangement is disposed within the vacuum drying chamber of a freeze dryer. The shelf arrangement has a plurality of vertically-movable shelves, flanges of which are positioned within vertically disposed, elongated slots. The slots are located in side plates, which plates maintain upper and lower bracket assemblies in spaced-apart relation. Certain of the slots are provided with stop means for rendering certain of the shelves vertically immovable. Elevating means are provided for raising and lowering the movable shelves.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: April 20, 1982
    Assignee: The Virtis Company, Inc.
    Inventor: Marc J. Thompson