The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 2008
Filed:
Feb. 10, 2006
Albert Kennedy Harrington, Mauldin, SC (US);
John Tony Kinard, Greer, SC (US);
Brian John Melody, Greer, SC (US);
David Alexander Wheeler, Williamston, SC (US);
Duane Earl Stenzinger, Simpsonville, SC (US);
Albert Kennedy Harrington, Mauldin, SC (US);
John Tony Kinard, Greer, SC (US);
Brian John Melody, Greer, SC (US);
David Alexander Wheeler, Williamston, SC (US);
Duane Earl Stenzinger, Simpsonville, SC (US);
Kemet Electronics Corporation, Greenville, SC (US);
Abstract
A capacitor comprising an aluminum anode and a dielectric layer comprising phosphate doped aluminum oxide and process for making the capacitor. Furthermore, the capacitor is formed by the process of: forming an aluminum plate; pre-hydrating the aluminum; contacting the plate with an anodizing solution comprising glycerine, 0.1 to 1.0%, by weight, water and 0.01 to 0.5%, by weight, orthophosphate; applying a voltage to the aluminum plate and determining an initial current; maintaining the first voltage until a first measured current is no more than 50% of the initial current; increasing the voltage and redetermining the initial current; maintaining the increased voltage until a second measured current is no more than 50% of the redetermined initial current, and continuing the increasing of the voltage and maintaining the increased voltage until a final voltage is achieved.