Patents by Inventor Alan R. Johnson

Alan R. Johnson 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).

  • Methods of making glass wool blowing insulation
    Patent number: 4682523
    Abstract: The method comprises cutting a glass wool blanket with a circular cutting grid having elastomeric plugs in the grid spaces. The cut columns and the plugs are both compressed. The cut columns are ejected by expansion of the plugs.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: July 28, 1987
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Alan R. Johnson, Richard C. Yawberg