Patents by Inventor William Ehrhart

William Ehrhart 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).

  • Head-only animal exposure chambers
    Patent number: 5896829
    Abstract: Animal exposure chambers are provided which have a radial configuration about an axis of air flow and tapered ports to more comfortably accommodate the animals during exposure.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: April 27, 1999
    Assignee: Genzyme Transgenics Corporation
    Inventors: Simon J. Rothenberg, George Dearlove, John Barnett, Daniel Dewees, William Ehrhart