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:
Jan. 27, 2015
Filed:
Aug. 12, 2013
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
Arvind K. Sinha, Rochester, MN (US);
Kory W. Weckman, Fargo, ND (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/08 (2006.01); G01R 31/08 (2006.01); G01N 27/04 (2006.01); H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
G01N 27/041 (2013.01); H05K 7/20509 (2013.01);
Abstract
A heat spreader includes a plurality of sensors that indicate that the heat spreader is flat against a chip stack. One or more nodes within a sensor are electrically connected. The electrical resistance values of the connection may be compared to determine if the nodes within the sensors are relatively flat. Sensor flatness may be correlated to heat spreader flatness for determining whether the heat spreader is flat against the chip stack when the heat spreader is installed upon the chip stack.