Patents by Inventor Charles C. Kreimer

Charles C. Kreimer 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).

  • Fire-resistant door
    Patent number: 4888918
    Abstract: The fire resistance of a metal skin covered door wherein the stile on the lock side projects between the skins for on site trimming purposes is more than doubled by directly connecting one leaf of each hinge to one of the skins and by directly connecting the skins to each other with a metal strap positioned on the top of the door close to the lock side edge thereof.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: December 26, 1989
    Assignee: Pease Industries, Inc.
    Inventors: F. Richard Green, Charles C. Kreimer