Patents by Inventor Francois Painchaud

Francois Painchaud 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).

  • Methods for presevation of foodstuffs
    Patent number: 5034235
    Abstract: Methods for food product preservation by inactivation of microorganisms and/or enzymes by applying pulses of very intense, very short duration pulses of light in the visible and near visible frequencies to the surface of food products to be preserved. Also disclosed are packaging methods and apparatus utilizing such intense, short pulses of polychromatic, incoherent light.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: July 23, 1991
    Assignee: Maxwell Laboratories, Inc.
    Inventors: Joseph E. Dunn, R. Wayne Clark, John F. Asmus, Jay S. Pearlman, Keith Boyer, Francois Painchaud, Gunter A. Hofmann