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:
Feb. 15, 2011
Filed:
Jun. 09, 2004
Applicants:
Vincent DE Groot, St. Louis, FR;
Philipp Zumoberhaus, Therwil, CH;
Inventors:
Vincent De Groot, St. Louis, FR;
Philipp Zumoberhaus, Therwil, CH;
Assignee:
Endress + Hauser Process Solutions AG, Reinach, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); G06F 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for monitoring a field device connected via a data bus with a control unit. To prevent unauthorized tampering with the field device, the control unit requests, at intervals of time, an individual identifier of the field device. The requested individual identifier is compared with an identifier stored in the control unit. An alarm is produced or a warning, in the case of a change in the requested individual identifier.