Patents by Inventor John E. Hahn

John E. Hahn 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: 4188735
    Abstract: An adjustable semi-flexible shoe is disclosed which is structurally and isometrically adapted for controllably stably supporting a human foot during walking following surgical and therapeutical treatment of the user's lower extremities while simultaneously permitting an approximated natural gait. A laminated elongate sole of semi-flexible polymeric materials has an upper sole laminate which stably supports the foot substantially free of compression while permitting limited longitudinal flexing and a lower outer sole laminate with a substantially flat surface extending from the metatarsal area through the heel area and an upwardly tapered surface in the toe area which affords cushioned approximated natural ambulation. A single integral canvas upper has a lower portion extending transversely through the sole and upper flaps which are adjustably releasably connected with one another to adjustably stably secure the user's foot to the sole.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: February 19, 1980
    Inventor: John E. Hahn