1
Keith G Obermeyer, James S Andrews, David Wayne Koch, John R Twardy, Mark H Theno: Insulated attic access cover. Ado, Vidas Arrett & Steinkraus, August 5, 2003: US06601352 (26 worldwide citation)

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.


2
Keith G Obermeyer, James S Andrews, David Wayne Koch, John R Twardy, Mark H Theno: Rafter air infiltration block. Ado, Vidas Arrett & Steinkraus PA, March 19, 2002: US06357185 (17 worldwide citation)

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 ...



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