Roland Hoffmann

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Erben, DE

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Patents Grantslast 30 patents

Information Patent Grant
Low-pressure gas discharge lamp with a reduced argon proportion in...
- Patent number 7,948,182
- Issue date May 24, 2011
- OSRAM Gesellschaft mit beschraenkter Haftung
- Martin Beck
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Mercury amalgams for elevated temperatures in discharge lamps
- Patent number 7,408,295
- Issue date Aug 5, 2008
- Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
- Martin Beck
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Electrode coil for discharge lamps and method for producing such an...
- Patent number 5,729,081
- Issue date Mar 17, 1998
- Osram Sylvania Inc.
- Roland Hoffmann
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge lamp, particularly cold-start fluorescent lamp, and metho...
- Patent number 5,614,784
- Issue date Mar 25, 1997
- Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
- Christian Harzig
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluorescent lamp with silicon dioxide coating
- Patent number 4,344,016
- Issue date Aug 10, 1982
- Patent-Treuhand-Gesellschaft fur elektrische Gluhampen mbH
- Roland Hoffmann
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Illuminating Device Comprising a Lamp and a Reflector
- Publication number 20100002427
- Publication date Jan 7, 2010
- Franz Bachmeir
- G02 - OPTICS
Information Patent Application
Low-Pressure Gas Discharge Lamp With a Reduced Argon Proportion In...
- Publication number 20090284154
- Publication date Nov 19, 2009
- Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
- Martin Beck
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Mercury amalgams for elevated temperatures in discharge lamps
- Publication number 20050231095
- Publication date Oct 20, 2005
- Martin Beck
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Low-pressure discharge lamp
- Publication number 20020175625
- Publication date Nov 28, 2002
- Patent-Treuhand-Gesellschaft Fur elektrische Gluhlampen mgH
- Roland Hoffmann
- H01 - BASIC ELECTRIC ELEMENTS