Patents by Inventor Asle Ingmar Johnsen

Asle Ingmar Johnsen 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).

  • Device for melting snow or ice
    Patent number: 5900178
    Abstract: An installation for melting of snow or ice, e.g. at roof downpipes on flat roofs, in gutters and the like, comprising a heating means (11), a temperature sensor means (4,6) and a control unit (1) for connecting and disconnecting the heating means (11) in dependence on sensed temperature. The temperature sensor means comprises a first temperature sensor (4) for sensing the surface temperature at the place of snow or ice melting, and a second temperature sensor (6) for sensing the air temperature at the topical place.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: May 4, 1999
    Inventor: Asle Ingmar Johnsen