US Patent 7323017 Nitrided valve metal material and method of making same

Patent 7323017 was granted and assigned to Cabot Corporation on January, 2008 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Cabot Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7323017

Date of Patent

January 29, 2008

Patent Application Number

11602150

Date Filed

November 20, 2006

Patent Primary Examiner

‌

Michael Lebentritt

Patent abstract

Valve metal material, including a valve metal, a nitride layer located on the valve metal, and an oxide layer located on the nitride layer is described. Methods of forming such a valve metal material are also described. The method includes forming an oxide layer onto the valve metal and then forming a nitride layer between the oxide layer and the valve metal.

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