Patents by Inventor Lars-Erik Berg

Lars-Erik Berg 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 with browning means, a browning plate for use in a microwave oven
    Patent number: 5268546
    Abstract: A microwave oven having browning means which includes a metal browning plate (10), the underside of which is provided with a layer (11) of a ferrite material. Via an input opening (6) for supplying microwaves to the oven cavity, polarized microwaves are propagated into a space provided under the browning plate. The browning plate is preferably of a circular shape and fitted to be carried by a rotating bottom plate (8) in the microwave oven.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: December 7, 1993
    Assignee: Whirlpool International B.V.
    Inventor: Lars-Erik Berg
  • Microwave oven, a method for excitation of the cavity of a microwave oven, and a wave guide device for carrying out the method
    Patent number: 5237139
    Abstract: This invention provides a microwave oven that is supplied with microwave energy through upper and lower feed openings in a side wall of the cavity. A wave guide is provided to feed those openings and is dimensioned to provide a resonance condition in the wave guide and a selected quality factor (Q-value) which is high in comparison with the Q-value of the oven cavity.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: August 17, 1993
    Assignee: Whirlpool International B.V.
    Inventors: Lars-Erik Berg, Per O. G. Risman