Patents by Inventor Stig Soderberg

Stig Soderberg 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: 5048516
    Abstract: A respiratory mask supplies air to a user from an external air source. The mask includes a face shield which sealingly engages the user's cheeks at the sides. The top of the face shield is open. The bottom is fixed to a pliable air hose having a U-shape, which sealingly engages the user's face just below the lower lip. Nozzles in the pliable air hose direct air upward into the mask. Another air hose connected to the U-shaped air hose extends away from the mask and connects to the external air source.
    Type: Grant
    Filed: February 13, 1990
    Date of Patent: September 17, 1991
    Inventor: Stig Soderberg