Patents by Inventor Mark L. Bulger

Mark L. Bulger 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).

  • Multi-sheet glazing unit and method of making same
    Patent number: 5553440
    Abstract: A multi-sheet glazing unit has a pair of outer glass sheets spaced from one another and secured to a spacer frame having a generally U-shaped cross section defined by outer legs secured to a base. The recess of a sheet retaining member is mounted on peripheral edge portions of an intermediate glass sheet. The intermediate glass sheet and sheet retaining member are mounted within the outer legs of the spacer frame to position the intermediate sheet between and spaced from the outer sheets. A method of making multi-sheet units is also disclosed.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: September 10, 1996
    Assignee: PPG Industries, Inc.
    Inventors: Mark L. Bulger, Albert E. Thompson, Jr.