Patents by Inventor David Wayne Koch

David Wayne Koch 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).

  • Insulated attic access cover
    Patent number: 6601352
    Abstract: An insulated attic access cover which is easily installed from below the attic access opening and includes a flat panel with a central insulation portion, flanges which carry a seal and attachment points to secure the cover to the ceiling.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: August 5, 2003
    Assignee: Ado, Inc.
    Inventors: Keith G. Obermeyer, James S. Andrews, David Wayne Koch, John R. Twardy, Mark H. Theno
  • Rafter air infiltration block
    Patent number: 6357185
    Abstract: A rafter air infiltration block for use in house construction to prevent loss of blown-in insulation and to prevent air infiltration between the outside and the trusses. A generally rectangular piece of stiff, waterproof material has a plurality of fold lines to allow the block to be readily placed where desired in a variety of different settings and to conform to a roof vent.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: March 19, 2002
    Assignee: Ado, Inc.
    Inventors: Keith G. Obermeyer, James S. Andrews, David Wayne Koch, John R. Twardy, Mark H. Theno