Jesse S Shaffer

US Patent:

7485240, Feb 3, 2009

Filed:

Jun 29, 2006

Appl. No.:

11/427632

Inventors:

Christopher R. Feger - Clemson SC, US
Jesse S. Shaffer - Columbia SC, US

Assignee:

Pacesetter, Inc. - Sunnyvale CA

International Classification:

A61N 1/39
H01G 9/00

US Classification:

252 622, 361503, 361504, 361505, 607 5

Abstract:

An electrolyte including γ-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.

US Patent:

45464154, Oct 8, 1985

Filed:

Mar 27, 1984

Appl. No.:

6/593226

Inventors:

Thomas A. Kent - Irmo SC
Jesse S. Shaffer - Columbia SC

Assignee:

North American Philips Corporation - New York NY

International Classification:

H01G 900

US Classification:

361433

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.

US Patent:

51435918, Sep 1, 1992

Filed:

Jun 11, 1991

Appl. No.:

7/714121

Inventors:

Jesse S. Shaffer - Columbia SC

Assignee:

U.S. Philips Corporation - New York NY

International Classification:

C25D 1104

US Classification:

205 50

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.

US Patent:

46099719, Sep 2, 1986

Filed:

Aug 11, 1983

Appl. No.:

6/522072

Inventors:

Jesse S. Shaffer - Columbia SC

Assignee:

North American Philips Corporation - New York NY

International Classification:

H01G 900

US Classification:

361433

Abstract:

A solid electrolytic capacitor includes a conductive polymer electrolyte. The electrolyte may comprise p-doped polyacrylonitrile, polypyrrole, or polyacetylene.

US Patent:

44379552, Mar 20, 1984

Filed:

Jul 5, 1983

Appl. No.:

6/510530

Inventors:

Jesse S. Shaffer - Columbia SC

Assignee:

U.S. Philips Corporation - New York NY

International Classification:

C25F 304

US Classification:

2041294

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.