Patents by Inventor Merlin R. Jahnke

Merlin R. Jahnke 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).

  • Microwave oven window
    Patent number: 4264800
    Abstract: Microwave oven window having a microwave-blocking screen, an interior plastic film and a pressure-sensitive adhesive layer bonding the plastic film to the screen over the full area of the screen but substantially not penetrating into the openings of the screen.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: April 28, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Merlin R. Jahnke, Alfred D. Nelson
  • Microwave oven window construction
    Patent number: 4215258
    Abstract: Microwave oven window comprising two transparent panels, an intermediate microwave-blocking screen and a transparent thermoplastic adhesive filling the space between the panels. The interior panel is very thin and the thickness of the thermoplastic adhesive panel barely exceeds that of the screen. The thinness of the interior panel plus adjacent adhesive minimizes the leakage of microwaves.
    Type: Grant
    Filed: December 9, 1977
    Date of Patent: July 29, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alfred D. Nelson, Merlin R. Jahnke