Inventor · disambiguated record
Frank Cathell
Also filed as: CATHELL FRANK
4 granted patents·89 citations·filing 1977–1989
78Inventor score
Top patents by PatentIndex Score
4 records- 0177US4270165AController for d.c. current supplied by a plurality of parallel power suppliesQUALIDYNE SYSTEMS INC·Filed 1979·Granted May 26, 1981·55 cites·25 claims
- 0259US4912597AAssembly of electric impedance elementsQUALIDYNE SYSTEMS·Filed 1989·Granted Mar 27, 1990·15 cites·32 claims
- 0346US4720775AInverter having saturating current transformer core for maintaining inverter current above minimum predetermined levelQUALIDYNE SYSTEMS INC·Filed 1986·Granted Jan 19, 1988·14 cites·22 claims
- 0435US4105957AFull wave bridge power inverterQUALIDYNE SYSTEMS INC·Filed 1977·Granted Aug 8, 1978·5 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →