Patents by Inventor Jan W. Szymaszek

Jan W. Szymaszek 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).

  • Molding composition for arc circuit breakers
    Patent number: 4511773
    Abstract: A ceramic useful as an electrically insulating material is produced by calcinating wollastonite powder, admixing the calcined powder with phosphoric acid of certain P.sub.2 O.sub.5 concentration range, die-pressing the resulting mixture, and firing the resulting pressed piece. The ceramic is employed within arc circuit breakers as a substitute for asbestos liners, dividers and arc splitters.
    Type: Grant
    Filed: August 3, 1983
    Date of Patent: April 16, 1985
    Assignee: General Electric Company
    Inventors: Eldon B. Heft, Irvin C. Huseby, Jan W. Szymaszek
  • Molding composition and product produced therefrom
    Patent number: 4413062
    Abstract: A ceramic useful as an electrically insulating material is produced by calcining wollastonite powder, admixing the calcined powder with phosphoric acid of certain P.sub.2 O.sub.5 concentration range, die-pressing the resulting mixture, and firing the resulting pressed piece.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: November 1, 1983
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Jan W. Szymaszek, Eldon B. Heft
  • Method of making homogenous metal oxide varistor powders
    Patent number: 4142996
    Abstract: A method for manufacturing metal oxide varistors with an extremely homogeneous dispersion of metal oxides is disclosed. In accordance with one embodiment of the invention, nitrates of zinc and certain metal additives are heated to form a hydrated solution which is further heated to form a dehydrated melt, which is further heated to form an extremely homogeneous dispersion of the metal oxides. Tin and antimony are added as oxides rather than nitrates. This process eliminates the need for ball milling.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: March 6, 1979
    Assignee: General Electric Company
    Inventors: Joe Wong, Jan W. Szymaszek