Inventor · disambiguated record
David C. Copley
Also filed as: COPLEY DAVID · COPLEY DAVID C · COPLEY DAVID CHARLES
12 granted patents·1 pending application·143 citations·filing 1989–2022
90Inventor score
Top patents by PatentIndex Score
13 records- 0190US7933420B2Methods and systems for determining the effectiveness of active noise cancellationCATERPILLAR INC·Filed 2006·Granted Apr 26, 2011·31 cites·20 claims
- 0279US8340318B2Methods and systems for measuring performance of a noise cancellation systemCOPLEY DAVID C·Filed 2006·Granted Dec 25, 2012·14 cites·21 claims
- 0378US10982586B2Distributed cooling system for a work machineCATERPILLAR INC·Filed 2019·Granted Apr 20, 2021·2 cites·20 claims
- 0477US8068616B2Methods and systems for controlling noise cancellationCOPLEY DAVID C·Filed 2006·Granted Nov 29, 2011·12 cites·22 claims
- 0576US7635048B2Sound suppression device for internal combustion engine systemCATERPILLAR INC·Filed 2006·Granted Dec 22, 2009·9 cites·8 claims
- 0670US7263888B2Two dimensional phased arrays for volumetric ultrasonic inspection and methods of useGEN ELECTRIC·Filed 2003·Granted Sep 4, 2007·28 cites·40 claims
- 0765US5119678APulse echo and through transmission ultra-soundGEN ELECTRIC·Filed 1989·Granted Jun 9, 1992·26 cites·6 claims
- 0862US12139889B2Method for assisting or training operators to operate machinesCATERPILLAR INC·Filed 2022·Granted Nov 12, 2024·0 cites·17 claims
- 0952US6273213B1Noise suppression louver having horizontal and vertical slatsCATERPILLAR INC·Filed 1999·Granted Aug 14, 2001·20 cites·19 claims
- 1048US7268671B2Shaped modulation audible alarmCATERPILLAR INC·Filed 2004·Granted Sep 11, 2007·1 cites·14 claims
- 1146US12170097B2Detection of audio communication signals present in a high noise environmentCATERPILLAR INC·Filed 2022·Granted Dec 17, 2024·0 cites·20 claims
- 1243US11808187B2Noise attenuation componentsCATERPILLAR INC·Filed 2021·Granted Nov 7, 2023·0 cites·20 claims
- 1338US2018174566A1Compact acoustic resonator for enclosed systemsCATERPILLAR INC·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →