Inventor · disambiguated record
Ulrich Roll
Also filed as: ROLL ULRICH
4 granted patents·2 pending applications·150 citations·filing 1984–2011
80Inventor score
Top patents by PatentIndex Score
6 records- 0187US4647817ADischarge lamp starting circuit particularly for compact fluorescent lampsPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 1985·Granted Mar 3, 1987·60 cites·10 claims
- 0284US5349270ATransformerless fluorescent lamp operating circuit, particularly for a compact fluorescent lamp, with phase-shifted inverter controlPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 1992·Granted Sep 20, 1994·60 cites·18 claims
- 0370US4588925AStarting circuit for low-pressure discharge lamp, such as a compact fluorescent lampPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 1984·Granted May 13, 1986·26 cites·16 claims
- 0433US2012320582A1Lamp comprising at least one light source and an electronic operating deviceHILSCHER ACHIM·Filed 2011·Application pending·0 cites
- 0531US2011211332A1Reflector element for an electric lamp and lamp with such a reflector elementOSRAM GMBH·Filed 2011·Application pending·0 cites
- 0630US5008596AFluorescent lamp high frequency operating circuitPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 1988·Granted Apr 16, 1991·4 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →