Paul David Townsend

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Soffolk, GB

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for polarization-insensitive quantum cryptography
- Patent number 6,529,601
- Issue date Mar 4, 2003
- British Telecommunications public limited company
- Paul D. Townsend
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum cryptography
- Patent number 5,953,421
- Issue date Sep 14, 1999
- British Telecommunications public limited company
- Paul David Townsend
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for key distribution using quantum cryptography
- Patent number 5,850,441
- Issue date Dec 15, 1998
- British Telecommunications public limited company
- Paul David Townsend
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key distribution in a multiple access network using quantum cryptog...
- Patent number 5,768,378
- Issue date Jun 16, 1998
- British Telecommunications public limited company
- Paul D. Townsend
- G02 - OPTICS
Information Patent Grant
System and method for key distribution using quantum cryptography
- Patent number 5,675,648
- Issue date Oct 7, 1997
- British Telecommunications public limited company
- Paul David Townsend
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Optical signal transmitter
- Publication number 20030007207
- Publication date Jan 9, 2003
- Peter Healey
- H04 - ELECTRIC COMMUNICATION TECHNIQUE