Patents by Inventor James S. Stadheim

James S. Stadheim 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).

  • Vent pipe insulating sleeve
    Patent number: 4442643
    Abstract: An insulating sleeve designed for positioning over a sewer vent pipe associated with a dwelling includes a tubular-shaped member constructed of insulating material which is covered by a protective outer shell. Additionally, the ends of the sleeve are provided with watertight seals and a roof shield may be utilized to effectively attach the sleeve to a roof. The sleeve is designed to prevent frost and snow buildup within a sewer vent pipe in cold climates.
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: April 17, 1984
    Inventor: James S. Stadheim