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Berlin, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Digital optical switch
Patent number
6,233,377
Issue date
May 15, 2001
Heinrich-Hertz-Institut für Nachrichtentechnik Berlin GmbH
Norbert Keil
G02 - OPTICS
Information
Patent Grant
Measurement method for the determination of low levels of optical a...
Patent number
5,185,645
Issue date
Feb 9, 1993
Heinrich-Hertz-Institut fur Nachrichtentechnik Berlin GmbH
Bernd Sartorius
G01 - MEASURING TESTING
Information
Patent Grant
Electronic projector system such as a high definition television (H...
Patent number
4,954,896
Issue date
Sep 4, 1990
Heinrich-Hertz-Institut fur Nachrichtentechnik Berlin GmbH
Stefan Mayer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Communication system for videoconferencing
Patent number
4,650,929
Issue date
Mar 17, 1987
Heinrich-Hertz-Institut fur Nachrichtentechnik Berlin GmbH
Georg Boerger
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuit arrangement for user stations in a communications network
Patent number
4,351,049
Issue date
Sep 21, 1982
Heinrich-Hertz-Institut fur Nachrichtentechnik Berlin GmbH
Rolf Nobis
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Interactive cable television system
Patent number
4,290,142
Issue date
Sep 15, 1981
Heinrich-Hertz-Institut fur Nachrichtentechnik Berlin GmbH
Rolf Schnee
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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