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. 24, 2012
Filed:
Apr. 18, 2008
Applicants:
Brian Dillon, Carrollton, TX (US);
Christopher J. Progler, Plano, TX (US);
Inventors:
Brian Dillon, Carrollton, TX (US);
Christopher J. Progler, Plano, TX (US);
Assignee:
Photronics, Inc., Brookfield, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An integrated circuit including a substrate; a circuit pattern formed over the substrate; and one or more fences formed around edges of the circuit pattern, each of the one or more fences having a determined electrical resistance which is used to detect the addition of malicious circuitry. Each fence has a determined electrical resistance which is used to monitor the validity of the fence.