Friedrich Toensing

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Hoechst, DE

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Patents Grantslast 30 patents

Information Patent Grant
Authenticating a mobile id via hash values
- Patent number 11,290,886
- Issue date Mar 29, 2022
- Deutsche Telekom AG
- Christian Stengel
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for generating digital watermarks for electronic documents
- Patent number 7,555,649
- Issue date Jun 30, 2009
- Deutsche Telekom AG
- Joerg Schwenk
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and device for accurately dating an electronic document
- Patent number 5,781,630
- Issue date Jul 14, 1998
- Deutsche Telekom AG
- Klaus Huber
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
AUTHENTICATING A MOBILE ID VIA HASH VALUES
- Publication number 20210195419
- Publication date Jun 24, 2021
- Deutsche Telekom AG
- Christian Stengel
- G06 - COMPUTING CALCULATING COUNTING