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. 05, 2026
Filed:
Oct. 09, 2024
Endress+hauser Conducta Gmbh+co. KG, Gerlingen, DE;
Björn Haase, Stuttgart, DE;
Thomas Alber, Stuttgart, DE;
Oliver Durm, Benningen am Neckar, DE;
Roman Griesser, Gerlingen, DE;
Martin Lohmann, Gerlingen, DE;
Stefan Robl, Hünxe, DE;
Karsten Traub, Bietigheim-Bissingen, DE;
Endress+Hauser Conducta GmbH+Co. KG, Gerlingen, DE;
Abstract
A method for verifying a first time recording unit of a field device that supplies the field device with a first date and/or a first time. The method includes receiving a ticket at the field device that comprises cryptographically secured information and a time stamp. The time stamp is obtained from a second time recording unit and contains a second date and/or second time. The method includes carrying out a trust assessment of the time stamp, wherein the trustworthiness of the second time recording unit is checked against the first time recording unit. If the trust assessment shows that the second time recording unit is more trustworthy than the first time recording unit, the method includes comparing the first date or the first time with the second date or the second time, and creating a warning message if a deviation greater than a predetermined factor is determined.