Inventor
BUTLER JOHN L
US28 patents
⚠️ This page may combine multiple inventors who share the name “BUTLER JOHN L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IMAGE ACOUSTICS INC
14 patentsUS5184332AFeb 2, 1993
Multiport underwater sound transducer
IMAGE ACOUSTICS INC62 citations96
US4845688AJul 4, 1989
Electro-mechanical transduction apparatus
IMAGE ACOUSTICS INC116 citations96
US4742499AMay 3, 1988
Flextensional transducer
IMAGE ACOUSTICS INC123 citations96
US7692363B2Apr 6, 2010
Mass loaded dipole transduction apparatus
IMAGE ACOUSTICS INC26 citations92
US6950373B2Sep 27, 2005
Multiply resonant wideband transducer apparatus
IMAGE ACOUSTICS INC21 citations92
US6734604B2May 11, 2004
Multimode synthesized beam transduction apparatus
IMAGE ACOUSTICS INC25 citations92
US4864548ASep 5, 1989
Flextensional transducer
IMAGE ACOUSTICS INC47 citations92
US4754441AJun 28, 1988
Directional flextensional transducer
IMAGE ACOUSTICS INC50 citations92
US4332986AJun 1, 1982
Speaker system employing passive radiator
IMAGE ACOUSTICS INC36 citations92
US5047683ASep 10, 1991
Hybrid transducer
IMAGE ACOUSTICS INC32 citations90
US7453186B1Nov 18, 2008
Cantilever driven transduction apparatus
IMAGE ACOUSTICS INC15 citations83
US7372776B2May 13, 2008
Modal acoustic array transduction apparatus
IMAGE ACOUSTICS INC11 citations83
US7292503B2Nov 6, 2007
Multi piston electro-mechanical transduction apparatus
IMAGE ACOUSTICS INC12 citations83
US8552625B1Oct 8, 2013
Cantilever type acoustic transduction apparatus
IMAGE ACOUSTICS INC6 citations72
BUTLER JOHN L
9 patentsUS8836792B1Sep 16, 2014
Active cloaking with transducers
BUTLER JOHN L23 citations92
US8659211B1Feb 25, 2014
Quad and dual cantilever transduction apparatus
BUTLER JOHN L23 citations92
US4443731AApr 17, 1984
Hybrid piezoelectric and magnetostrictive acoustic wave transducer
BUTLER JOHN L46 citations90
US8599648B1Dec 3, 2013
Doubly steered acoustic array
BUTLER JOHN L7 citations83
US10744532B1Aug 18, 2020
End driven bender transduction apparatus
BUTLER JOHN L2 citations72
US9036029B2May 19, 2015
Active cloaking with wideband transducers
BUTLER JOHN L3 citations62
US8072843B1Dec 6, 2011
Stepped multiply resonant wideband transducer apparatus
BUTLER JOHN L6 citations62
US12087263B1Sep 10, 2024
Underwater acoustic projector transducers
BUTLER JOHN L0 citations54
US11911793B1Feb 27, 2024
Deep submergence bender transduction apparatus
BUTLER JOHN L1 citations51