Inventor · disambiguated record
Hagen Hartwig
Also filed as: HARTWIG HAGEN
3 granted patents·12 citations·filing 1990–1991
62Inventor score
Files withSIEMENS AG3
Top patents by PatentIndex Score
3 records- 0135US5001360AMethod and device for converting voltage to frequencySIEMENS AG·Filed 1990·Granted Mar 19, 1991·7 cites·10 claims
- 0225US5008564AMethod and device for converting voltage to frequencySIEMENS AG·Filed 1990·Granted Apr 16, 1991·4 cites·6 claims
- 0323US5138286AMethod and device for voltage frequency transformationSIEMENS AG·Filed 1991·Granted Aug 11, 1992·1 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →