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Munich, Germany

Wolfram Sowa

USPTO Granted Patents = 9

Average Co-Inventor Count = 1.7

ph-index = 3

Forward Citations = 22(Granted Patents)

Location History:

München, DE (2008 - 2011)
Munich, DE (1996 - 2013)

Company Filing History:

Osram Gesellschaft MIT Beschraenkter Haftung

Patent-treuhand-gesellschaft F. Elektrische Gluehlampen Mbh

Patent-treuhand-gesellschaft Für Elektrische Glühlampen Mbh

5. 1 out of 224

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Patent-treuhand-gesellschaft Fur Gluhlampen Mbh

Patent-treuhand-gesellschaft Fur Elektrisch Gluhlampen Mbh

Years Active: 1996-2013

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8587210 - Electronic ballast for operating at least one discharge lamp (2013-11-19),

2. 8390209 - Circuit arrangement for conversion of an input AC voltage to a DC voltage, retrofit lamp having a circuit arrangement such as this, as well as a lighting system (2013-03-05),

3. 8054003 - Switch-off time regulation system for an inverter for driving a lamp (2011-11-08),

4. 7564673 - Control circuit for converters (2009-07-21),

5. 7394207 - Circuit arrangement having a full bridge with switching load relief for operating lamps (2008-07-01),

6. 7274578 - Converter circuit having class E converter modules (2007-09-25),

7. 6768271 - Ballast and method for operating a lamp (2004-07-27),

8. 6747418 - Device and method for preheating the coil electrodes of a fluorescent lamp (2004-06-08),

9. 5493182 - Fluorescent lamp operating circuit, permitting dimming of the lamp (1996-02-20),

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