Inventor · disambiguated record
James J. Croft, Iii
Also filed as: CROFT III JAMES J · CROFT III JAMES JOSEPH · CROFT JAMES J · CROFT JAMES J III
47 granted patents·24 pending applications·1,759 citations·filing 1986–2017
99Inventor score
Top patents by PatentIndex Score
71 records- 0196US6389146B1Acoustically asymmetric bandpass loudspeaker with multiple acoustic filtersAMERICAN TECH CORP·Filed 2000·Granted May 14, 2002·123 cites·34 claims
- 0296US5396194AAudio frequency power amplifiersCARVER CORP·Filed 1993·Granted Mar 7, 1995·119 cites·50 claims
- 0393US6229899B1Method and device for developing a virtual speaker distant from the sound sourceAMERICAN TECH CORP·Filed 1998·Granted May 8, 2001·146 cites·14 claims
- 0491US7596229B2Parametric audio system for operation in a saturated air mediumAMERICAN TECH CORP·Filed 2005·Granted Sep 29, 2009·25 cites·17 claims
- 0591US7162042B2Modulator processing for a parametric speaker systemAMERICAN TECH CORP·Filed 2003·Granted Jan 9, 2007·52 cites·58 claims
- 0690US8199931B1Parametric loudspeaker with improved phase characteristicsNORRIS ELWOOD G·Filed 2008·Granted Jun 12, 2012·18 cites·49 claims
- 0790US6584205B1Modulator processing for a parametric speaker systemAMERICAN TECH CORP·Filed 1999·Granted Jun 24, 2003·105 cites·18 claims
- 0890US6577738B2Parametric virtual speaker and surround-sound systemAMERICAN TECH CORP·Filed 2001·Granted Jun 10, 2003·52 cites·12 claims
- 0989US7729498B2Modulator processing for a parametric speaker systemAMERICAN TECH CORP·Filed 2007·Granted Jun 1, 2010·18 cites·18 claims
- 1088US9247342B2Loudspeaker enclosure system with signal processor for enhanced perception of low frequency outputCROFT III JAMES J·Filed 2014·Granted Jan 26, 2016·10 cites·52 claims
- 1188US6704426B2Loudspeaker systemAMERICAN TECH CORP·Filed 2001·Granted Mar 9, 2004·45 cites·33 claims
- 1287US7319763B2Power amplification for parametric loudspeakersAMERICAN TECH CORP·Filed 2001·Granted Jan 15, 2008·40 cites·24 claims
- 1387US6700217B1Apparatus for converting ocean wave motion to electricityNORTH VAUGHN W·Filed 1999·Granted Mar 2, 2004·50 cites·29 claims
- 1486US7564981B2Method of adjusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including sameAMERICAN TECH CORP·Filed 2004·Granted Jul 21, 2009·35 cites·23 claims
- 1586US4803733ALoudspeaker diaphragm mounting system and methodCARVER R W·Filed 1986·Granted Feb 7, 1989·93 cites·18 claims
- 1685US6934402B2Planar-magnetic speakers with secondary magnetic structureAMERICAN TECH CORP·Filed 2002·Granted Aug 23, 2005·33 cites·47 claims
- 1783US8942408B1Magnetically one-side driven planar transducer with improved electro-magnetic circuitCROFT III JAMES JOSEPH·Filed 2012·Granted Jan 27, 2015·7 cites·32 claims
- 1883US7376236B1Piezoelectric film sonic emitterAMERICAN TECH CORP·Filed 2000·Granted May 20, 2008·34 cites·42 claims
- 1983US6393129B1Paper structures for speaker transducersAMERICAN TECH CORP·Filed 1999·Granted May 21, 2002·85 cites·40 claims
- 2082US7103193B2Bandpass woofer enclosure with multiple acoustic fibersAMERICAN TECH CORP·Filed 2001·Granted Sep 5, 2006·29 cites·27 claims
- 2181US7298853B2Parametric virtual speaker and surround-sound systemAMERICAN TECH CORP·Filed 2002·Granted Nov 20, 2007·21 cites·11 claims
- 2281US7224808B2Dynamic carrier system for parametric arraysAMERICAN TECH CORP·Filed 2002·Granted May 29, 2007·23 cites·26 claims
- 2381US5109416ADipole speaker for producing ambience soundCROFT JAMES J·Filed 1990·Granted Apr 28, 1992·86 cites·22 claims
- 2480US7142688B2Single-ended planar-magnetic speakerAMERICAN TECH CORP·Filed 2002·Granted Nov 28, 2006·24 cites·62 claims
- 2579US7343017B2System for playback of pre-encoded signals through a parametric loudspeaker systemAMERICAN TECH CORP·Filed 2002·Granted Mar 11, 2008·20 cites·35 claims
- 2679US6925187B2Horn array emitterAMERICAN TECH CORP·Filed 2001·Granted Aug 2, 2005·19 cites·36 claims
- 2777US6535612B1Electroacoustic transducer with diaphragm securing structure and methodAMERICAN TECH CORP·Filed 1999·Granted Mar 18, 2003·63 cites·70 claims
- 2874US7298852B2Dynamic power sharing in a multi-channel sound systemAMERICAN TECH CORP·Filed 2001·Granted Nov 20, 2007·12 cites·43 claims
- 2973US8275137B1Audio distortion correction for a parametric reproduction systemLIU WENSEN·Filed 2008·Granted Sep 25, 2012·9 cites·8 claims
- 3073US6188772B1Electrostatic speaker with foam statorAMERICAN TECH CORP·Filed 1998·Granted Feb 13, 2001·50 cites·53 claims
- 3173US5748759ALoud speaker structureCARVER CORP·Filed 1995·Granted May 5, 1998·54 cites·37 claims
- 3272US8194502B1Variable directivity loud hailing deviceCROFT III JAMES J·Filed 2008·Granted Jun 5, 2012·5 cites·20 claims
- 3372US6169811B1Bandpass loudspeaker systemAMERICAN TECH CORP·Filed 1999·Granted Jan 2, 2001·50 cites·37 claims
- 3471US6760455B2Electrostatic loudspeaker with a distributed filterAMERICAN TECH CORP·Filed 2001·Granted Jul 6, 2004·15 cites·16 claims
- 3571US6628791B1Signal derived bias supply for electrostatic loudspeakersAMERICAN TECH CORP·Filed 1999·Granted Sep 30, 2003·41 cites·15 claims
- 3668US7158646B2Signal derived bias supply for electrostatic loudspeakersAMERICAN TECH CORP·Filed 2003·Granted Jan 2, 2007·11 cites·25 claims
- 3768US6201874B1Electrostatic transducer with nonplanar configured diaphragmAMERICAN TECH CORP·Filed 1998·Granted Mar 13, 2001·41 cites·36 claims
- 3866US8588428B2Dynamic power sharing in a multi-channel sound systemCROFT III JAMES J·Filed 2008·Granted Nov 19, 2013·3 cites·33 claims
- 3964US6850623B1Parametric loudspeaker with improved phase characteristicsAMERICAN TECH CORP·Filed 1999·Granted Feb 1, 2005·28 cites·34 claims
- 4062US7088830B2Parametric ring emitterAMERICAN TECH CORP·Filed 2002·Granted Aug 8, 2006·7 cites·16 claims
- 4162US6304662B1Sonic emitter with foam statorAMERICAN TECH CORP·Filed 1998·Granted Oct 16, 2001·34 cites·22 claims
- 4260US7551062B2Directional acoustic deviceAMERICAN TECH CORP·Filed 2007·Granted Jun 23, 2009·3 cites·46 claims
- 4359US9197965B2Planar-magnetic transducer with improved electro-magnetic circuitCROFT III JAMES J·Filed 2014·Granted Nov 24, 2015·1 cites·37 claims
- 4453US2008137872A1Dynamic power sharing in a multi-channel sound systemAMERICAN TECH CORP·Filed 2007·Application pending·0 cites
- 4552US2009097693A1Planar-magnetic speakers with secondary magnetic structureCROFT III JAMES J·Filed 2008·Application pending·0 cites
- 4651US10090819B2Signal processor for loudspeaker systems for enhanced perception of lower frequency outputCROFT III JAMES J·Filed 2015·Granted Oct 2, 2018·0 cites·29 claims
- 4750US2007127767A1Single-ended planar-magnetic speakerAMERICAN TECH CORP·Filed 2006·Application pending·0 cites
- 4850US2008239876A1High intensity vehicle proximity acousticsAMERICAN TECH CORP·Filed 2007·Application pending·0 cites
- 4949US6175636B1Electrostatic speaker with moveable diaphragm edgesAMERICAN TECH CORP·Filed 1998·Granted Jan 16, 2001·20 cites·37 claims
- 5049US2006050923A1Planar-magnetic speakers with secondary magnetic structureAMERICAN TECH CORP·Filed 2005·Application pending·0 cites
Showing the top 50 of 71 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →