Patents by Inventor Thomas J. Stock

Thomas J. Stock 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).

  • Roofing membrane temperature indicator
    Patent number: 7476021
    Abstract: A roofing membrane temperature indicator is provided for preventing the installation of a roofing membrane or roofing membranes at a temperature below a minimum recommended installation temperature for the roofing membrane(s) and/or a minimum recommended installation temperature for the roofing membrane(s) for a particular installation procedure. The membrane temperature indicator is visibly associated with the roofing membrane(s) and includes a thermochromic indicator having a first color at temperatures below a designated temperature and a second color visibly different from the first color at and above the designated temperature. The designated temperature at which the color of the membrane indicator changes is at or above a minimum recommended installation temperature for the roofing membrane(s) and/or a minimum recommended installation temperature for the roofing membrane(s) for a particular installation procedure.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: January 13, 2009
    Assignee: Johns Manville
    Inventors: Thomas J. Stock, Raymond C. Swann, Christopher James Griffin, Joel Evan Hazy