Patents by Inventor Jan Vilhelm Christensen

Jan Vilhelm Christensen 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).

  • Window, in particular for mounting in an inclined roof surface
    Patent number: 6167661
    Abstract: A window for mounting in an inclined roof surface has a frame structure and a sash structure, which is hingedly connected (13-15;51-53) with the frame structure for pivoting about a horizontal axis relative thereto, and in which an insulating pane (3;33) is mounted. The top, bottom and side members (1,2,4,5;31,32,34,35) of the frame and sash structures are made from wood profiles with exterior cladding members (16-18;46,48) of weather-protecting material which, in the closed position of the window, overlap the spaces between the frame and sash structures and the hinge connection between the structures.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: January 2, 2001
    Assignee: Velux Industri A/S
    Inventor: Jan Vilhelm Christensen