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. 21, 2014
Filed:
Sep. 01, 2011
Applicant:
Don A. Gilliland, Rochester, MN (US);
Inventor:
Don A. Gilliland, Rochester, MN (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A heatsink may include an area in thermal contact with a semiconductor microchip surface and a first trench of a first depth. The first trench may be substantially continuous around the area. A first substance, such as ferrite, may be positioned in the first trench to attenuate electromagnetic interference. A second trench having a second depth may be formed around and further from the area than the first trench. A second substance may be positioned in the second trench.