Patents by Inventor Larry Sven Swanson

Larry Sven Swanson 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).

  • Mattress with visco-elastic, temperature sensitive top layer
    Patent number: 5669094
    Abstract: A mattress comprises a top layer of visco-elastic polyurethane foam having a low rebound property and which is temperature sensitive and having a thickness of approximately 1/2 to 11/2 inches; a second layer of latex foam having vertical bores and a thickness of approximately 2 to 4 inches; and a third layer of resilient material having a thickness of approximately 3 to 7 inches.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: September 23, 1997
    Inventor: Larry Sven Swanson