Inventor · disambiguated record
Karl-Friedrich Leowald
Also filed as: LEOWALD KARL-FRIEDRICH
11 granted patents·111 citations·filing 1974–1993
90Inventor score
Files withSIEMENS AG11
Top patents by PatentIndex Score
11 records- 0176US4084206AProtection circuit for serially connected thyristorsSIEMENS AG·Filed 1976·Granted Apr 11, 1978·18 cites·6 claims
- 0263US5384528AMethod and apparatus for recognizing defects in a triggering system of a controlled series compensatorSIEMENS AG·Filed 1993·Granted Jan 24, 1995·25 cites·11 claims
- 0362US5489838AMethod and apparatus for generating a synchronizing signal for a controlled series compensatorSIEMENS AG·Filed 1993·Granted Feb 6, 1996·24 cites·14 claims
- 0454US3938026ACircuit for the simultaneous ignition of a plurality of thyristorsSIEMENS AG·Filed 1974·Granted Feb 10, 1976·9 cites·10 claims
- 0548US3961204AFiring circuit for an electric valveSIEMENS AG·Filed 1974·Granted Jun 1, 1976·7 cites·10 claims
- 0635US3987314ACircuit arrangement for firing a controlled semiconductor valve, particularly a thyristorSIEMENS AG·Filed 1974·Granted Oct 19, 1976·3 cites·7 claims
- 0734US5291120AMethod and apparatus for symmetrically modulating a controlled series compensation systemSIEMENS AG·Filed 1993·Granted Mar 1, 1994·10 cites·5 claims
- 0832US4063145ACircuit arrangement for firing controlled, parallel-connected electric valvesSIEMENS AG·Filed 1976·Granted Dec 13, 1977·2 cites·6 claims
- 0930US5053691AMethods and device for stabilizing an electric supply system through the adaptation of a controller of a static compensating deviceSIEMENS AG·Filed 1990·Granted Oct 1, 1991·10 cites·17 claims
- 1027US3946389ACircuit arrangement for the wireless transmission of control signals to the control paths of controlled semiconductor valvesSIEMENS AG·Filed 1974·Granted Mar 23, 1976·2 cites·2 claims
- 1127US3944815AFiring apparatus for a plurality of electric valvesSIEMENS AG·Filed 1974·Granted Mar 16, 1976·1 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →