Eckhard Koch

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Essen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Watermarking encoded content
- Patent number 8,144,923
- Issue date Mar 27, 2012
- Thomson Licensing
- Jian Zhao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and device for confirming the authenticity of a document and...
- Patent number 7,383,441
- Issue date Jun 3, 2008
- Thomson Licensing
- Jan C. Vorbrüggen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Procedure for marking binary coded data sets
- Patent number 6,359,985
- Issue date Mar 19, 2002
- Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Eckhard Koch
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital authentication with analog documents
- Patent number 6,243,480
- Issue date Jun 5, 2001
- Jian Zhao
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Secure distribution of digital representations
- Patent number 6,141,753
- Issue date Oct 31, 2000
- Fraunhofer-Gesellschaft
- Jian Zhao
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Watermarking Encoded Content
- Publication number 20090080689
- Publication date Mar 26, 2009
- Jian Zhao
- G06 - COMPUTING CALCULATING COUNTING