Patents by Inventor Ronny Kent Hagman

Ronny Kent Hagman 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).

  • Field of the invention
    Patent number: 5643480
    Abstract: An electric heating device (34) in which is included an electric energy source (45) which is designed as a thin film battery (45). The heating device also includes a resistor heating unit (40) comprising a first material stratum (40) consisting of an electrically conductive polymer material with PTC properties. The resistor heating unit (40) and the electric energy source (45) are disposed adjacent to one another and form a composite unit in which the major surfaces of the first material stratum (40) and thin film battery (45), respectively, face towards one another. Electrodes (42, 43) are connected, by the intermediary of a switch (48), to the poles of the battery (45) and to the resistor heating unit (40).
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: July 1, 1997
    Assignee: Nordica S.p.A.
    Inventors: Magnus Peter Mikael Gustavsson, Ronny Kent Hagman