Inventor · disambiguated record
Fritz Frehn
Also filed as: FREHN FRITZ
6 granted patents·278 citations·filing 1970–1980
86Inventor score
Top patents by PatentIndex Score
6 records- 0195US4198233AMethod for the manufacture of tools, machines or parts thereof by composite sinteringTHYSSEN EDELSTAHLWERKE AG·Filed 1978·Granted Apr 15, 1980·114 cites·8 claims
- 0294US3942954ASintering steel-bonded carbide hard alloyDEUTSCHE EDELSTAHLWERKE AG·Filed 1970·Granted Mar 9, 1976·115 cites·7 claims
- 0381US3967935ACorrosion and wear resistant steel sinter alloyDEUTSCHE EDELSTAHLWERKE GMBH·Filed 1973·Granted Jul 6, 1976·26 cites·4 claims
- 0459US4180401ASintered steel alloyTHYSSEN EDELSTAHLWERKE AG·Filed 1977·Granted Dec 25, 1979·11 cites·8 claims
- 0542US4386959AMethod for compound sinteringTHYSSEN EDELSTAHLWERKE AG·Filed 1980·Granted Jun 7, 1983·7 cites·4 claims
- 0640US4156606AHard-material alloy for use in tool parts and parts subject to wearTHYSSEN EDELSTAHLWERKE AG·Filed 1977·Granted May 29, 1979·5 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →