Patents by Inventor Keith Lunstra

Keith Lunstra 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: 6119930
    Abstract: The present invention is directed to a carton for co-packaging two distinct food substances, in two distinct cavities. This is accomplished by means of a single blank of paperboard which is creased, folded and glued so as to form one major cavity and one minor cavity, said minor cavity being an integral discrete compartment.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: September 19, 2000
    Assignee: Bell Paper Box, Inc.
    Inventors: Keith Lunstra, Mark Hill