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Andreas Hohlfeld
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Berlin, DE
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Patents Grants
last 30 patents
Information
Patent Grant
High-pressure discharge lamp with starting aid and method for produ...
Patent number
8,531,106
Issue date
Sep 10, 2013
Osram AG
Markus Demmert
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Lamp which is closed on two sides
Patent number
7,745,999
Issue date
Jun 29, 2010
OSRAM Gesellschaft mit beschraenkter Haftung
Jurgen Graf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Lamp which is closed on two sides
Patent number
7,253,562
Issue date
Aug 7, 2007
Patent-Treuhand-Gesellschaft für Electrische Glühlampen mbH
Jürgen Gräf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electric lamp with outer bulb and associated support body
Patent number
7,221,098
Issue date
May 22, 2007
Patent-Treuhand-Gesellschaft für elektrische Glülampen mbH
Jürgen Gräf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Process for producing an electric lamp with outer bulb
Patent number
7,112,116
Issue date
Sep 26, 2006
Patent-Treuhand-Gesellschaft fur Elektrisch Gluhlampen mbH
Jürgen Gräf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal halide discharge lamp with a quartz discharge vessel and an o...
Patent number
5,854,535
Issue date
Dec 29, 1998
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Andreas Hohlfeld
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal halide discharge lamp
Patent number
5,729,091
Issue date
Mar 17, 1998
Patent-Treuhand-Gesellschaft F. Electrische Gluehlampen mbH
Clemens Barthelmes
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low-power, high-pressure discharge lamp, particularly for general s...
Patent number
5,363,007
Issue date
Nov 8, 1994
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen mbH
Dietrich Fromm
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Metal halide low-power high-pressure discharge lamp
Patent number
5,210,463
Issue date
May 11, 1993
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Dietrich Fromm
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
High-pressure discharge lamp
Patent number
5,107,177
Issue date
Apr 21, 1992
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Clemens Barthelmes
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method to make a reflective coating on high-pressure discharge lamps
Patent number
4,948,530
Issue date
Aug 14, 1990
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Clemens Barthelmes
C03 - GLASS MINERAL OR SLAG WOOL
Patents Applications
last 30 patents
Information
Patent Application
High-pressure discharge lamp with starting aid
Publication number
20120161622
Publication date
Jun 28, 2012
OSRAM AG
Michael Beau
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
HIGH-PRESSURE DISCHARGE LAMP WITH STARTING AID AND METHOD FOR PRODU...
Publication number
20120146496
Publication date
Jun 14, 2012
OSRAM AG
Markus Demmert
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Lamp which is closed on two sides
Publication number
20070222386
Publication date
Sep 27, 2007
Osram Sylvania Inc.
Jurgen Graf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electric lamp with outer bulb and associated support body
Publication number
20040256986
Publication date
Dec 23, 2004
Patent-Treuhand-Gesellschaft fur elekrtrische Gluhlampen gbH
Jurgen Graf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Lamp which is closed on two sides
Publication number
20040251834
Publication date
Dec 16, 2004
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Jurgen Graf
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Process for producing an electric lamp with outer bulb
Publication number
20040253897
Publication date
Dec 16, 2004
PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN GBH
Jurgen Graf
H01 - BASIC ELECTRIC ELEMENTS