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:
Mar. 10, 2015
Filed:
Jan. 21, 2009
Lee Allen Neitzel, Austin, TX (US);
Gary Keith Law, Georgetown, TX (US);
Godfrey R. Sherriff, Austin, TX (US);
Lee Allen Neitzel, Austin, TX (US);
Gary Keith Law, Georgetown, TX (US);
Godfrey R. Sherriff, Austin, TX (US);
Fisher-Rosemount Systems, Inc., Round Rock, TX (US);
Abstract
Example removable security modules for use with process control devices and related methods are disclosed. An example removable security module includes a body configured to be removably coupled to the process control device and a memory disposed in the body with a shared secret stored in the memory. The example removable security module also includes a processing unit disposed in the body, coupled to the memory and configured to read information from the process control device, compare the information to the shared secret and authenticate the process control device based on the comparison.