Patents by Inventor Kristina E. Darnfors

Kristina E. Darnfors 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).

  • Inflatable cushion
    Patent number: 4161794
    Abstract: Inflatable resting cushion, the supporting part of which is made of two sheets of a flexible material, which sheets are joined together along defining lines. Said lines define the shape of the cushion and divide the same into two inflatable air compartments between which the air communication is kept interrupted. The one of said defining lines, which defines the limits of separation of the two inflatable compartments from each other, exhibits a curved shape.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: July 24, 1979
    Assignee: Bengt Petersson New Products Investment AB
    Inventor: Kristina E. Darnfors