Patents by Inventor Sigfried D. Soli

Sigfried D. Soli 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).

  • Pressure-regulating ear plug
    Patent number: 5467784
    Abstract: A pressure regulating earplug for regulating the rate of change of pressure inside an ear to minimize the pressure differential between the middle ear and a volume of the external ear cavity adjacent the ear drum is made of an ear plug adapted to fit tightly within the external ear cavity with no or minimal air leakage, and disposed within the earplug is a pressure regulator with a slow leak rate. Examples of the material which causes the pressure regulation include porous metal and porous ceramic material.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: November 21, 1995
    Inventors: J. Phil Mobley, Chaoying Zhang, Sigfried D. Soli, Chris Johnson, Drew O'Connell