Patents by Inventor David E. McHam

David E. McHam 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).

  • Container for prepackaging, popping and serving popcorn
    Patent number: 4292332
    Abstract: An expansible and disposable container for popping popcorn prepackaged with cooking oil therein in a microwave oven; such container being made of a material impervious to cooking oil and having its upper side provided with a pattern of weakness that serves as an excess vapor pressure release during the popping and which thereafter serves for convenient opening of the container so that the latter can be used as a serving tray.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: September 29, 1981
    Inventor: David E. McHam