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Walter Heitmann
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Gross-Biberau, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Photonic crystals
Patent number
7,359,605
Issue date
Apr 15, 2008
Deutsche Telekom AG
Walter Heitmann
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Fused silica-based optical waveguide and method for its manufacture
Patent number
6,975,800
Issue date
Dec 13, 2005
Deutsche Telekom AG
Wolfgang Dultz
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for manufacturing preforms for polymer optical fibers
Patent number
6,786,991
Issue date
Sep 7, 2004
Deutsche Telekom AG
Walter Heitmann
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method using photonic crystals for the dispersion compensation of o...
Patent number
6,760,513
Issue date
Jul 6, 2004
Deutsche Telekom AG
Walter Heitmann
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Plastic optical fiber
Patent number
6,501,894
Issue date
Dec 31, 2002
Wolfgang Dultz
G02 - OPTICS
Information
Patent Grant
Glass for optical waveguides or the like
Patent number
6,490,399
Issue date
Dec 3, 2002
Deutsche Telekom
Walter Heitmann
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Physical-contact optical fiber connector
Patent number
6,067,396
Issue date
May 23, 2000
Deutsche Telekom AG
Walter Heitmann
G02 - OPTICS
Information
Patent Grant
Optical connection
Patent number
6,041,156
Issue date
Mar 21, 2000
Deutsche Telekom AG
Walter Heitmann
G02 - OPTICS
Information
Patent Grant
Process of producing preforms for silica glass optical waveguides w...
Patent number
5,609,666
Issue date
Mar 11, 1997
Heraeus Quarzglas GmbH
Walter Heitmann
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Optical element
Patent number
5,390,266
Issue date
Feb 14, 1995
Electronic Production Partners GmbH
Walter Heitmann
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Optical system for injection of light from a light source into a me...
Publication number
20040114860
Publication date
Jun 17, 2004
Wolfgang Dultz
G02 - OPTICS
Information
Patent Application
Photonic crystals
Publication number
20040109657
Publication date
Jun 10, 2004
Walter Heitmann
C30 - CRYSTAL GROWTH
Information
Patent Application
Optical wageguide based on quartz glass and method for the producti...
Publication number
20030165312
Publication date
Sep 4, 2003
Wolfgang Dultz
G02 - OPTICS
Information
Patent Application
Plastic optical fiber
Publication number
20010024558
Publication date
Sep 27, 2001
Wolfgang Dultz
G02 - OPTICS