Patents by Inventor Alfred S. Poturnicki, Jr.

Alfred S. Poturnicki, Jr. 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).

  • Hydrophone with extended operational life
    Patent number: 4782470
    Abstract: Permeation of sea water through the protective rubber housing to the conductive portions of the exterior surface of the ceramic or other pressure-sensitive element results in the development of a low insulation resistance which leads to failure of the unit. The operational life of the unit is extended through the application of an acoustically transparent water impervious layer, interposed and bonded between the exterior surface of the ceramic or other pressure-sensitive element and the interior surface of the rubber housing.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: November 1, 1988
    Assignee: General Instrument Corp.
    Inventors: Alfred S. Poturnicki, Jr., James E. Traft