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:
May. 01, 2007
Filed:
Mar. 11, 2003
Applicant:
Phillip C. Salisbury, Golden Valley, MN (US);
Inventor:
Phillip C. Salisbury, Golden Valley, MN (US);
Assignee:
Rimage Corporation, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
Validation of printer cartridges using a unique identifier from an RFID tag, a serial number or identifier from a cartridge, and a seed to generate a reproducible key are described. The key is written to non-volatile memory of the RFID tag. The parameters for generation of the key are retrieved when the cartridge is asked to print in a printer, and a second key is generated, and the keys are compared. If the keys match, the cartridge is validated and printing continues.