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Norbert Keil
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Berlin, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Sensor element and method for the production thereof and use thereof
Patent number
8,989,538
Issue date
Mar 24, 2015
Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
Wolfgang Schade
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for compensating polarization-dependent freque...
Patent number
8,295,656
Issue date
Oct 23, 2012
Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
Martin Schell
G02 - OPTICS
Information
Patent Grant
Optical waveguides derived from a combination of poly(perfluorocycl...
Patent number
6,853,790
Issue date
Feb 8, 2005
Pirelli Cavi e Sistemi S.p.A.
Monika Bauer
G02 - OPTICS
Information
Patent Grant
Temperature insensitive optical waveguide device
Patent number
6,757,469
Issue date
Jun 29, 2004
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung E.V.
Monika Bauer
G02 - OPTICS
Information
Patent Grant
Waveguide systems or structures or parts thereof, containing polycy...
Patent number
6,716,958
Issue date
Apr 6, 2004
Pirelli Cavi e Sistemi S.p.A.
Monika Bauer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Thermo-optical switch
Patent number
6,282,335
Issue date
Aug 28, 2001
Alcatel
Kurt Lösch
G02 - OPTICS
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
Thermo-optical switch
Patent number
6,215,918
Issue date
Apr 10, 2001
Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH
Norbert Keil
G02 - OPTICS
Patents Applications
last 30 patents
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Patent Application
Method for Manufacturing an Electro-Optical Component and Electro-O...
Publication number
20230234310
Publication date
Jul 27, 2023
Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
Klemens Janiak
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
LASER ARRANGEMENT, METHOD FOR CONTROLLING LASER AND MEASURING METHOD
Publication number
20190052054
Publication date
Feb 14, 2019
Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung e.V.
Magnus HAPPACH
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SENSOR ELEMENT AND METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF
Publication number
20120321242
Publication date
Dec 20, 2012
Wolfgang Schade
G01 - MEASURING TESTING
Information
Patent Application
METHOD AND APPARATUS FOR COMPENSATING POLARIZATION-DEPENDENT FREQUE...
Publication number
20100209039
Publication date
Aug 19, 2010
Martin Schell
G02 - OPTICS
Information
Patent Application
Temperature insensitive optical waveguide device
Publication number
20030175005
Publication date
Sep 18, 2003
Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
Monika Bauer
G02 - OPTICS
Information
Patent Application
Temperature insensitive optical waveguide device
Publication number
20030174991
Publication date
Sep 18, 2003
Fraunhofer-Gesellschaft zur Forderung der angewandten forschung e.V.
Monika Bauer
G02 - OPTICS