Patents by Inventor Jesse S. Shaffer

Jesse S. Shaffer 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).

  • Electrolyte for high voltage electrolytic capacitors
    Patent number: 7485240
    Abstract: An electrolyte including ?-butyrolactone, a cosolvent and an alcohol is disclosed, which may be used in an electrolytic capacitor with very high operating voltage. Optional additional additives are added to the electrolyte to enhance its conductivity and reliability.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: February 3, 2009
    Assignee: Pacesetter, Inc.
    Inventors: Christopher R. Feger, Jesse S. Shaffer
  • Method of producing ultra stable aluminum oxide for high volt electrolytic capacitors and product thereof
    Patent number: 5143591
    Abstract: The invention relates to a method of producing aluminum capacitor foil adapted for use in high voltage AC motor start capacitors. Aluminum foil is electrolytically etched in a hot aqueous solution of sodium cloride and then immersed in a hot solution of nitric acid. The foil is immediately thereafter passivated in a dilute aqueous solution of phosphoric acid. The passivated foil is electrolytically treated at a first voltage of at least 150 but not greater than 250 volts in a solution of an ammonium salt of a phosphate, a silicate or a vanadinate to substantially reduce the leakage current, and further electrolytically treated at a second voltage of a magnitude about twice that of the first voltage in a solution of an ammonium salt of an aliphatic dicarboxylic acid of at least 9 carbon atoms and ammonium phosphate until an essentailly amorphous oxide is formed on the foil.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: September 1, 1992
    Assignee: U.S. Philips Corporation
    Inventor: Jesse S. Shaffer
  • Glycol based mid-volt capacitor
    Patent number: 4761713
    Abstract: An electrolytic capacitor having an electrolyte consisting essentially of a solution in ethylene glycol of 8-12% by weight of ammonium benzoate, 2.5-4% by weight of ammonium azelate, 1.5-3% by weight of ammonium sebaccic, and 2-3% by weight of water.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: August 2, 1988
    Assignee: North American Philips Corp.
    Inventor: Jesse S. Shaffer
  • Electrolytic capacitor with polymer conductor
    Patent number: 4609971
    Abstract: A solid electrolytic capacitor includes a conductive polymer electrolyte. The electrolyte may comprise p-doped polyacrylonitrile, polypyrrole, or polyacetylene.
    Type: Grant
    Filed: August 11, 1983
    Date of Patent: September 2, 1986
    Assignee: North American Philips Corporation
    Inventor: Jesse S. Shaffer
  • Heat dissipation aluminum electrolytic capacitor
    Patent number: 4546415
    Abstract: An aluminum electrolytic capacitor having improved axial heat dissipation resulting from a smaller ratio between the width of the anode foil and the diameter of the capacitor foil roll.
    Type: Grant
    Filed: March 27, 1984
    Date of Patent: October 8, 1985
    Assignee: North American Philips Corporation
    Inventors: Thomas A. Kent, Jesse S. Shaffer
  • Combined AC and DC etching of aluminum foil
    Patent number: 4437955
    Abstract: Aluminum foil exhibiting a good combination of capacitance and mechanical strength is produced by an etching procedure that includes the steps of AC pre-etching aluminum foil in an acid bath containing hydrochloric acid and then, without removing the hydrochloric acid from the foil, etching the foil with a high density DC while the foil is immersed in an aqueous solution of sodium chloride and sodium sulfate.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: March 20, 1984
    Assignee: U.S. Philips Corporation
    Inventor: Jesse S. Shaffer