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. 10, 2017
Filed:
Aug. 03, 2016
Applicant:
Lexmark International, Inc., Lexington, KY (US);
Inventors:
Adam Jude Ahne, Lexington, KY (US);
Graydon Randall Dodson, Lexington, KY (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 7/08 (2006.01); G06K 19/06 (2006.01);
U.S. Cl.
CPC ...
G06K 7/087 (2013.01); G06K 19/06187 (2013.01);
Abstract
A helical physical unclonable function is disclosed. The helical physical unclonable function may be used to authenticate a supply item for an imaging device. Measurements of the magnetic field above a helical flight are stored in a non-volatile memory to be used by an imaging device to authenticate the supply item. Other systems and methods are disclosed.