Inventor · disambiguated record
John L. Butler
Also filed as: BUTLER JOHN L
28 granted patents·824 citations·filing 1974–2023
97Inventor score
Top patents by PatentIndex Score
28 records- 0195US4845688AElectro-mechanical transduction apparatusIMAGE ACOUSTICS INC·Filed 1988·Granted Jul 4, 1989·116 cites·37 claims
- 0295US4742499AFlextensional transducerIMAGE ACOUSTICS INC·Filed 1986·Granted May 3, 1988·123 cites·20 claims
- 0394US8659211B1Quad and dual cantilever transduction apparatusBUTLER JOHN L·Filed 2013·Granted Feb 25, 2014·23 cites·24 claims
- 0493US8836792B1Active cloaking with transducersBUTLER JOHN L·Filed 2011·Granted Sep 16, 2014·23 cites·21 claims
- 0590US7692363B2Mass loaded dipole transduction apparatusIMAGE ACOUSTICS INC·Filed 2006·Granted Apr 6, 2010·26 cites·20 claims
- 0684US8552625B1Cantilever type acoustic transduction apparatusIMAGE ACOUSTICS INC·Filed 2012·Granted Oct 8, 2013·6 cites·23 claims
- 0783US4754441ADirectional flextensional transducerIMAGE ACOUSTICS INC·Filed 1986·Granted Jun 28, 1988·50 cites·33 claims
- 0882US11911793B1Deep submergence bender transduction apparatusBUTLER JOHN L·Filed 2023·Granted Feb 27, 2024·1 cites·21 claims
- 0981US4326275ADirectional transducerHAZELTINE CORP·Filed 1979·Granted Apr 20, 1982·32 cites·10 claims
- 1080US7453186B1Cantilever driven transduction apparatusIMAGE ACOUSTICS INC·Filed 2007·Granted Nov 18, 2008·15 cites·24 claims
- 1180US6734604B2Multimode synthesized beam transduction apparatusIMAGE ACOUSTICS INC·Filed 2002·Granted May 11, 2004·25 cites·31 claims
- 1279US8599648B1Doubly steered acoustic arrayBUTLER JOHN L·Filed 2012·Granted Dec 3, 2013·7 cites·29 claims
- 1379US6654316B1Single-sided electro-mechanical transduction apparatusFiled 2002·Granted Nov 25, 2003·20 cites·47 claims
- 1478US7372776B2Modal acoustic array transduction apparatusIMAGE ACOUSTICS INC·Filed 2006·Granted May 13, 2008·11 cites·38 claims
- 1577US6950373B2Multiply resonant wideband transducer apparatusIMAGE ACOUSTICS INC·Filed 2003·Granted Sep 27, 2005·21 cites·24 claims
- 1677US5184332AMultiport underwater sound transducerIMAGE ACOUSTICS INC·Filed 1990·Granted Feb 2, 1993·62 cites·57 claims
- 1776US4438509ATransducer with tensioned-wire precompressionRAYTHEON CO·Filed 1981·Granted Mar 20, 1984·35 cites·8 claims
- 1875US4443731AHybrid piezoelectric and magnetostrictive acoustic wave transducerBUTLER JOHN L·Filed 1982·Granted Apr 17, 1984·46 cites·16 claims
- 1974US10744532B1End driven bender transduction apparatusBUTLER JOHN L·Filed 2017·Granted Aug 18, 2020·2 cites·31 claims
- 2073US8072843B1Stepped multiply resonant wideband transducer apparatusBUTLER JOHN L·Filed 2009·Granted Dec 6, 2011·6 cites·34 claims
- 2173US4642802AElimination of magnetic biasing using magnetostrictive materials of opposite strainRAYTHEON CO·Filed 1984·Granted Feb 10, 1987·26 cites·7 claims
- 2272US3933219ASpeaker systemAMBIENT INC·Filed 1974·Granted Jan 20, 1976·18 cites·9 claims
- 2371US7292503B2Multi piston electro-mechanical transduction apparatusIMAGE ACOUSTICS INC·Filed 2004·Granted Nov 6, 2007·12 cites·19 claims
- 2471US5047683AHybrid transducerIMAGE ACOUSTICS INC·Filed 1990·Granted Sep 10, 1991·32 cites·64 claims
- 2571US4864548AFlextensional transducerIMAGE ACOUSTICS INC·Filed 1988·Granted Sep 5, 1989·47 cites·33 claims
- 2670US4332986ASpeaker system employing passive radiatorIMAGE ACOUSTICS INC·Filed 1980·Granted Jun 1, 1982·36 cites·6 claims
- 2768US9036029B2Active cloaking with wideband transducersBUTLER JOHN L·Filed 2014·Granted May 19, 2015·3 cites·19 claims
- 2861US12087263B1Underwater acoustic projector transducersBUTLER JOHN L·Filed 2023·Granted Sep 10, 2024·0 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →