Patents by Inventor John S. Witzeman

John S. Witzeman 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).

  • Patent number: 5039001
    Abstract: The present invention provides packaging capable of room-temperature storage of foods followed by simplified microwave heating. The package also permits heating in conventional ovens. The package includes a multi-ply container portion having a central recess surrounded by a sealing rim to which is heat sealed a lid which is flexible and non-extensible and has good barrier proporties. The inner surface of the container is amorphous polyethylene terephthalate to assure good heat sealing. The out ply of the container is crystallizable to provide sufficient dimensional stability during heating. The package can be retorted and vents itself when microwave heated, thus simplifying storage and preparation of foods.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: August 13, 1991
    Assignee: Kraft General Foods, Inc.
    Inventors: Panagiotis Kinigakis, Terry L. Taylor, John S. Witzeman
  • Patent number: 4187326
    Abstract: This invention relates to a clouding agent obtained by drying an aqueous dispersion comprised of, on a dry basis, a major amount of malto dextrin (in solution) and minor amounts of xanthan gum and titanium dioxide. The clouding agent thus obtained is added to a dry beverage mix in amounts effective to produce the desired opacity and remain suspended for a time sufficient to consume a beverage prepared from the dry mix.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: February 5, 1980
    Assignee: General Foods Corporation
    Inventors: James M. Serafino, Slawko Yadlowsky, John S. Witzeman