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. 02, 2014
Filed:
Mar. 05, 2013
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
Mukta G. Farooq, Hopewell Junction, NY (US);
Robert Hannon, Wappingers Falls, NY (US);
Subramanian S. Iyer, Mount Kisco, NY (US);
Kevin S. Petrarca, Newburgh, NY (US);
Stuart A. Sieg, Albany, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for printing a wafer ID on a wafer, the method comprises identifying a wafer ID on a back side of the wafer. Subsequently, etching a plurality of recesses, consistent in size with chip features of the wafer, into the front side of the wafer, such that the plurality of recesses depicts the wafer ID. The method further comprises filling the recesses with a metal.