US Patent 7153449 Acidic treatment liquid and method of treating copper surfaces

Patent 7153449 was granted and assigned to Atotech on December, 2006 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Atotech

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

71534490

Date of Patent

December 26, 2006

Patent Application Number

103113950

Date Filed

July 6, 2001

Patent Citations Received

‌

US Patent 11873564 Etch chemistry for metallic materials

Patent Primary Examiner

‌

Felisa Hiteshew

Patent abstract

The present invention relates to a solution and to a method of treating copper surfaces, the copper surfaces being brought into contact with an acidic treatment liquid which contains hydrogen peroxide and at least one five-membered heterocyclic compound as well as additionally at least one microstructure modifying agent selected from the group comprising thioles A, disulfides B, sulfides C and thioamides D having the following respective general formulae:

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