Inventor · disambiguated record
William J. Ashworth
Also filed as: ASHWORTH WILLIAM J
6 granted patents·1 pending application·150 citations·filing 1978–2001
85Inventor score
Files withASHWORTH WILLIAM J5
Top patents by PatentIndex Score
7 records- 0190US5031501AMethod for attaching an audio transducer to a string musical instrumentASHWORTH WILLIAM J·Filed 1990·Granted Jul 16, 1991·42 cites·1 claims
- 0282US4151379AElectromagnetic speaker with bucking parallel high and low frequency coils drives sounding board and second diaphragm or external apparatus via magnetic coupling and having adjustable air gap and slot pole pieceASHWORTH WILLIAM J·Filed 1978·Granted Apr 24, 1979·51 cites·31 claims
- 0348US5706358AMagnetic audio transducer with hinged armatureFiled 1996·Granted Jan 6, 1998·23 cites·5 claims
- 0443US5058173ACombination inertia type audio transducer and loudspeakerASHWORTH WILLIAM J·Filed 1990·Granted Oct 15, 1991·19 cites·5 claims
- 0538US2002181730A1Electromagnetic audio transducer with micro adjustable coreFiled 2001·Application pending·0 cites
- 0634US5287413ADual voice coil sound reproducing deviceASHWORTH WILLIAM J·Filed 1992·Granted Feb 15, 1994·10 cites·2 claims
- 0732US4718098AMulti-diaphragm artificial reverberation deviceASHWORTH WILLIAM J·Filed 1986·Granted Jan 5, 1988·5 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →