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:
Sep. 16, 2008
Filed:
Nov. 28, 2006
Krystyna Waleria Semkow, Poughquag, NY (US);
Anurag Jain, Poughkeepsie, NY (US);
Kamalesh K. Srivastava, Wappingers Falls, NY (US);
Krystyna Waleria Semkow, Poughquag, NY (US);
Anurag Jain, Poughkeepsie, NY (US);
Kamalesh K. Srivastava, Wappingers Falls, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An etchant which includes an aqueous solution of between about 30% and about 38% concentrated hydrogen peroxide, said percentages being by volume, based on the total volume of the solution; between about 3.5 ml and about 20 ml per liter of phosphoric acid; and an amount of potassium hydroxide to adjust the pH of the solution to between about 7.8 and about 9.1. The etchant is useful in removing a layer of an alloy of titanium and tungsten or a layer of tungsten from a precision surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile