Inventor · disambiguated record
Friedrich Pfeifer
Also filed as: PFEIFER FRIEDRICH
5 granted patents·62 citations·filing 1974–1981
80Inventor score
Top patents by PatentIndex Score
5 records- 0183US4314594AReducing magnetic hysteresis losses in cores of thin tapes of soft magnetic amorphous metal alloysVACUUMSCHMELZE GMBH·Filed 1980·Granted Feb 9, 1982·34 cites·23 claims
- 0259US4082580AIron-nickel-molybdenum alloy having improved stability and high initial permeabilityVACUUMSCHMELZE GMBH·Filed 1974·Granted Apr 4, 1978·8 cites·3 claims
- 0343US4290827AProcess for producing Ni-Fe magnetic tape coresVACUUMSCHMELZE GMBH·Filed 1979·Granted Sep 22, 1981·6 cites·8 claims
- 0440US3991639AApparatus for protecting tools of hydraulic pressesSMG SUEDDEUTSCHE MASCHINENBAU·Filed 1975·Granted Nov 16, 1976·7 cites·4 claims
- 0536US4441940AMethod for producing toroidal tape cores for fault current safety switches and use of such coresVACUUMSCHMELZE GMBH·Filed 1981·Granted Apr 10, 1984·7 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →