Patents by Inventor George Wallis

George Wallis 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: 4233372
    Abstract: An hermetic glass-metal seal, for an electrochemical cell, having a metallic central feedthrough as a terminal thereof which is chemically incompatible with the components of said cell. The feedthrough is connected within said cell to a second compatible metallic element for electrical connection to an electrode within said cell. An inert polymeric material is sealed to the glass or outer metal member of the glass-metal seal and is sealed to and encloses the metallic feedthrough within said cell and the connection area between the feedthrough and said second metallic element.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: November 11, 1980
    Assignee: P. R. Mallory & Co. Inc.
    Inventors: Per Bro, George Wallis
  • Patent number: 4121334
    Abstract: A method for mass producing silicon type pressure transducers and transducers resultant therefrom are disclosed. In the method, the major components of a plurality of transducers are simultaneously joined together by a field-assisted bonding technique which allows the components to be made of materials having an approximate match in coefficients of thermal expansion and therefore imparts improved performance characteristics to the individual transducers during operation. This method of mass production of transducers reduces the amount of operational steps and significantly reduces the amount of time and labor required for manufacture.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: October 24, 1978
    Assignee: P. R. Mallory & Co. Inc.
    Inventor: George Wallis