Patents by Inventor Knut B. Vigerstrom

Knut B. Vigerstrom 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).

  • Food container having electrode pockets
    Patent number: 4109566
    Abstract: A container for heating foodstuff contained therein comprising an electrically insulating outer wall forming an enclosure for the foodstuff, perforated inner electrically insulating wall means within the enclosure forming at least two pockets between said inner wall and said outer wall for receiving at least two spaced apart electrodes which are adapted to be connected to an electrical supply source, and removable closure means cooperating with said outer wall immediately adjacent said pockets whereby removal of said closure means opens said pockets for receiving the electrodes.
    Type: Grant
    Filed: April 15, 1975
    Date of Patent: August 29, 1978
    Assignee: Electro-Food AB
    Inventor: Knut B. Vigerstrom