Ciphering/encryption

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CPC
H04Q2213/339

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HELECTRICITY H04Electric communication H04QSELECTING H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems

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H04Q2213/339Ciphering/encryption

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Patents Grantslast 30 patents

Information Patent Grant
Process and device for transmitting confidential connection establi...
- Patent number 6,708,275
- Issue date Mar 16, 2004
- Deutsche Telekom
- Helmut Stolz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Process and device for authenticating subscribers to digital exchanges
- Patent number 6,317,830
- Issue date Nov 13, 2001
- Deutsche Telekom AG
- Helmut Stolz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ISDN-based high speed communication system
- Patent number 5,832,240
- Issue date Nov 3, 1998
- Allen J Larsen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for exchanging information between ISDN terminal equipment,...
- Patent number 5,553,146
- Issue date Sep 3, 1996
- Siemens Aktiengesellschaft
- Horst Flake
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents