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:
Apr. 27, 2010
Filed:
Jul. 23, 2007
Hans Christopher Sowa, Schaumburg, IL (US);
Daniel J. Mcdonald, Cary, IL (US);
David J. Chater-lea, Crowthorne, GB;
Scott James Pappas, Lake Zurich, IL (US);
Jason Johur, Maidenhead, GB;
Dennis Newkirk, West Chicago, IL (US);
Randy Kremske, Woodstock, IL (US);
Walter F. Anderson, Algonquin, IL (US);
Glen B. Walton, Tadley, GB;
Hans Christopher Sowa, Schaumburg, IL (US);
Daniel J. McDonald, Cary, IL (US);
David J. Chater-Lea, Crowthorne, GB;
Scott James Pappas, Lake Zurich, IL (US);
Jason Johur, Maidenhead, GB;
Dennis Newkirk, West Chicago, IL (US);
Randy Kremske, Woodstock, IL (US);
Walter F. Anderson, Algonquin, IL (US);
Glen B. Walton, Tadley, GB;
Motorola, Inc., Schaumburg, IL (US);
Abstract
A first infrastructure system device other than a mobile station generates an encryption key and encrypts the encryption key with a first intrakey associated with a first zone that includes a second infrastructure system device other than a mobile station, yielding a first encrypted encryption key. The first intrakey is used only by infrastructure system devices other than a mobile station for encrypting at least the encryption key prior to transport within the first zone. The first infrastructure system device forwards the first encrypted encryption key to the second infrastructure system device.