Inventor · disambiguated record
David T. Chang
Also filed as: CHANG DAVID · CHANG DAVID AUGUSTUS · CHANG DAVID T · CHANG DAVID T L
106 granted patents·3 pending applications·1,325 citations·filing 1977–2024
99Inventor score
Top patents by PatentIndex Score
109 records- 0198US8503161B1Supercapacitor cells and micro-supercapacitorsCHANG DAVID T·Filed 2011·Granted Aug 6, 2013·52 cites·17 claims
- 0297US10901054B1Integrated optical waveguide and electronic addressing of quantum defect centersHRL LAB LLC·Filed 2019·Granted Jan 26, 2021·21 cites·20 claims
- 0397US9977097B1Micro-scale piezoelectric resonating magnetometerHRL LAB LLC·Filed 2015·Granted May 22, 2018·14 cites·22 claims
- 0497US7750535B2Quartz-based nanoresonatorHRL LAB LLC·Filed 2007·Granted Jul 6, 2010·42 cites·9 claims
- 0597US7581443B2Disc resonator gyroscopesBOEING CO·Filed 2006·Granted Sep 1, 2009·77 cites·25 claims
- 0697US7459099B2Quartz-based nanoresonators and method of fabricating sameHRL LAB LLC·Filed 2005·Granted Dec 2, 2008·55 cites·12 claims
- 0796US11835339B1Continuous online self-calibration for gyroscopes through modulation of damping axesHRL LAB LLC·Filed 2022·Granted Dec 5, 2023·5 cites·24 claims
- 0896US10031191B1Piezoelectric magnetometer capable of sensing a magnetic field in multiple vectorsHRL LAB LLC·Filed 2016·Granted Jul 24, 2018·13 cites·21 claims
- 0996US9250074B1Resonator assembly comprising a silicon resonator and a quartz resonatorHRL LAB LLC·Filed 2014·Granted Feb 2, 2016·18 cites·27 claims
- 1096US9046541B1Method for producing a disk resonator gyroscopeHRL LAB LLC·Filed 2012·Granted Jun 2, 2015·18 cites·15 claims
- 1196US8765615B1Quartz-based MEMS resonators and methods of fabricating sameCHANG DAVID T·Filed 2010·Granted Jul 1, 2014·32 cites·24 claims
- 1295US11275099B1Navigational grade resonant MicroElectroMechanical Systems (mems) accelerometer and method of operationHRL LAB LLC·Filed 2019·Granted Mar 15, 2022·8 cites·29 claims
- 1395US9991863B1Rounded and curved integrated tethers for quartz resonatorsHRL LAB LLC·Filed 2015·Granted Jun 5, 2018·12 cites·12 claims
- 1495US7559130B2Method for fabricating quartz-based nanoresonatorsHRL LAB LLC·Filed 2007·Granted Jul 14, 2009·30 cites·17 claims
- 1594US11841243B1Frequency multiplexed operation of vibratory gyroscopes for continuous self-calibrationHRL LAB LLC·Filed 2022·Granted Dec 12, 2023·3 cites·17 claims
- 1694US10175307B1FM demodulation system for quartz MEMS magnetometerHRL LAB LLC·Filed 2016·Granted Jan 8, 2019·15 cites·32 claims
- 1794US8912711B1Thermal stress resistant resonator, and a method for fabricating sameCHANG DAVID T·Filed 2010·Granted Dec 16, 2014·19 cites·12 claims
- 1894US7994877B1MEMS-based quartz hybrid filters and a method of making the sameHRL LAB LLC·Filed 2008·Granted Aug 9, 2011·25 cites·13 claims
- 1994US7802356B1Method of fabricating an ultra thin quartz resonator componentHRL LAB LLC·Filed 2008·Granted Sep 28, 2010·29 cites·11 claims
- 2094US7555824B2Method for large scale integration of quartz-based devicesHRL LAB LLC·Filed 2006·Granted Jul 7, 2009·29 cites·28 claims
- 2194US7237315B2Method for fabricating a resonatorHRL LAB LLC·Filed 2003·Granted Jul 3, 2007·53 cites·14 claims
- 2293US10281277B1Phononic travelling wave gyroscopeHRL LAB LLC·Filed 2016·Granted May 7, 2019·11 cites·24 claims
- 2393US9879997B1Quartz resonator with plasma etched tethers for stress isolation from the mounting contactsHRL LAB LLC·Filed 2014·Granted Jan 30, 2018·16 cites·28 claims
- 2493US7851971B2Low frequency quartz based MEMS resonators and method of fabricating the sameHRL LAB LLC·Filed 2009·Granted Dec 14, 2010·27 cites·4 claims
- 2592US10571267B1High stability angular sensorHRL LAB LLC·Filed 2016·Granted Feb 25, 2020·7 cites·2 claims
- 2692US10126376B1Quartz magnetometer having a quartz resonant plate with a broaden distal end for enhanced magnetic sensitivityHRL LAB LLC·Filed 2016·Granted Nov 13, 2018·11 cites·22 claims
- 2792US9061886B1Doubly-clamped bean quartz micro-resonatorHRL LAB LLC·Filed 2013·Granted Jun 23, 2015·10 cites·31 claims
- 2892US8766745B1Quartz-based disk resonator gyro with ultra-thin conductive outer electrodes and method of making sameKUBENA RANDALL L·Filed 2009·Granted Jul 1, 2014·21 cites·28 claims
- 2992US6580138B1Single crystal, dual wafer, tunneling sensor or switch with silicon on insulator substrate and a method of making sameHRL LAB LLC·Filed 2000·Granted Jun 17, 2003·40 cites·41 claims
- 3091US10967092B2Diffuser for essential oilsGREENAIR INC·Filed 2019·Granted Apr 6, 2021·8 cites·15 claims
- 3191US10914585B1High dynamic range gyroscopeHRL LAB LLC·Filed 2020·Granted Feb 9, 2021·2 cites·3 claims
- 3291US10444014B1High dynamic range gyroscopeHRL LAB LLC·Filed 2016·Granted Oct 15, 2019·6 cites·19 claims
- 3391US10236858B1Differential split-electrode feedthrough cancellation mechanismHRL LAB LLC·Filed 2015·Granted Mar 19, 2019·10 cites·19 claims
- 3491US8778800B1Methods of making supercapacitor cells and micro-supercapacitorsCHANG DAVID T·Filed 2013·Granted Jul 15, 2014·12 cites·7 claims
- 3591US7830074B2Integrated quartz oscillator on an active electronic substrateHRL LAB LLC·Filed 2007·Granted Nov 9, 2010·23 cites·19 claims
- 3690US12416499B1Real-time adaptive tuning of gyroscopes via quadrature ditheringHRL LAB LLC·Filed 2022·Granted Sep 16, 2025·1 cites·20 claims
- 3790US11299981B2Continuous trajectory calculation for directional drillingHRL LAB LLC·Filed 2018·Granted Apr 12, 2022·8 cites·33 claims
- 3889US7653985B1Method of fabricating an RF MEMS switch with spring-loaded latching mechanismHRL LAB LLC·Filed 2007·Granted Feb 2, 2010·16 cites·9 claims
- 3989US7345866B1Continuously tunable RF MEMS capacitor with ultra-wide tuning rangeHRL LAB LLC·Filed 2005·Granted Mar 18, 2008·18 cites·19 claims
- 4088US8138016B2Large area integration of quartz resonators with electronicsCHANG DAVID T·Filed 2009·Granted Mar 20, 2012·15 cites·18 claims
- 4187US11493534B1Continuous online self-calibrating resonant FM microelectromechanical systems (MEMS) accelerometerHRL LAB LLC·Filed 2019·Granted Nov 8, 2022·3 cites·22 claims
- 4287US11101786B1HF-VHF quartz MEMS resonatorHRL LAB LLC·Filed 2018·Granted Aug 24, 2021·4 cites·10 claims
- 4387US10308505B1Method and apparatus for the monolithic encapsulation of a micro-scale inertial navigation sensor suiteHRL LAB LLC·Filed 2014·Granted Jun 4, 2019·10 cites·27 claims
- 4487US8558281B1Gate metallization methods for self-aligned sidewall gate GaN HEMTREGAN DEAN C·Filed 2011·Granted Oct 15, 2013·15 cites·10 claims
- 4587US7647688B1Method of fabricating a low frequency quartz resonatorHRL LAB LLC·Filed 2008·Granted Jan 19, 2010·14 cites·18 claims
- 4687US7015060B1Cloverleaf microgyroscope with through-wafer interconnects and method of manufacturing a cloverleaf microgyroscope with through-wafer interconnectsHRL LAB LLC·Filed 2004·Granted Mar 21, 2006·40 cites·19 claims
- 4785US8782876B1Method of manufacturing MEMS based quartz hybrid filtersKUBENA RANDALL L·Filed 2011·Granted Jul 22, 2014·7 cites·15 claims
- 4885US8769802B1Method of fabrication an ultra-thin quartz resonatorCHANG DAVID T·Filed 2010·Granted Jul 8, 2014·7 cites·3 claims
- 4985US6674141B1Single crystal, tunneling and capacitive, three-axes sensor using eutectic bonding and a method of making sameHRL LAB LLC·Filed 2000·Granted Jan 6, 2004·23 cites·88 claims
- 5085USD471030SSectional deskCHANG DAVID·Filed 2002·Granted Mar 4, 2003·31 cites·1 claims
Showing the top 50 of 109 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →