Inventor · disambiguated record
Fred M. Fehsenfeld, Sr.
Also filed as: FEHSENFELD FRED M · FEHSENFELD SR FRED M
4 granted patents·218 citations·filing 1988–2003
81Inventor score
Top patents by PatentIndex Score
4 records- 0191US4994952ALow-noise switching power supply having variable reluctance transformerELECTRONICS RESEARCH GROUP INC·Filed 1989·Granted Feb 19, 1991·139 cites·11 claims
- 0287US6831939B2Dual use of an induction furnace to produce hot metal or pig iron while processing iron and volatile metal containing materialsHERITAGE ENVIRONMENTAL SERV·Filed 2003·Granted Dec 14, 2004·22 cites·19 claims
- 0378US4876638ALow-noise switching power supply having variable reluctance transformerELECTRONIC RESEARCH GROUP INC·Filed 1988·Granted Oct 24, 1989·48 cites·17 claims
- 0473US6932853B2Mechanical separation of volatile metals at high temperaturesHERITAGE ENVIRONMENTAL SERV·Filed 2003·Granted Aug 23, 2005·9 cites·27 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →