Patents by Inventor Kathleen K. Stout

Kathleen K. Stout 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).

  • Patent number: 5884336
    Abstract: A flexible mouth seal having a porous direct flow hygroscopic material associated with a cold weather mask. The nose has free breathing and does not breath in or out through the hygroscopic material. The cold weather mask and mouth seal captures some of the moisture in exhaled air by a porous hygroscopic material and returns the moisture to the dry cold inhaled air for assistance in cold weather breathing.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: March 23, 1999
    Inventor: Kathleen K. Stout