Inventor · disambiguated record
Nathan A. Johanningsmeier
Also filed as: JOHANNINGSMEIER NATHAN · JOHANNINGSMEIER NATHAN A · JOHANNINGSMEIER NATHAN ALAN
22 granted patents·3 pending applications·128 citations·filing 2010–2024
93Inventor score
Top patents by PatentIndex Score
25 records- 0195US9967664B1Sensor assembly for measuring diaphragm displacement and temperature in a micro speakerAPPLE INC·Filed 2017·Granted May 8, 2018·29 cites·28 claims
- 0294US9654863B2Main logic board with mounted speaker and integrated acoustic cavityAPPLE INC·Filed 2014·Granted May 16, 2017·26 cites·20 claims
- 0393US10283989B1Electrical power converter and detachable energy storage reservoirAPPLE INC·Filed 2018·Granted May 7, 2019·21 cites·19 claims
- 0490US8644519B2Electronic devices with improved audioPANCE ALEKSANDAR·Filed 2010·Granted Feb 4, 2014·21 cites·18 claims
- 0583US9231543B2Audio power amplification with reduced input power supply crest factorAPPLE INC·Filed 2014·Granted Jan 5, 2016·7 cites·26 claims
- 0683US8942410B2Magnetically biased electromagnet for audio applicationsAPPLE INC·Filed 2012·Granted Jan 27, 2015·7 cites·20 claims
- 0781US9263992B1Class D amplifier with variable switching frequencyAPPLE INC·Filed 2014·Granted Feb 16, 2016·9 cites·20 claims
- 0876US2025093965A1User input deviceCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2024·Application pending·0 cites
- 0974US10254134B2Interference-insensitive capacitive displacement sensingAPPLE INC·Filed 2017·Granted Apr 9, 2019·1 cites·22 claims
- 1069US9847713B2Charge pump-based split-rail supply generationAPPLE INC·Filed 2016·Granted Dec 19, 2017·2 cites·20 claims
- 1167US2023143709A1User input deviceCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2022·Application pending·0 cites
- 1261US11455265B2Data bus driver with electrical energy dumpAPPLE INC·Filed 2021·Granted Sep 27, 2022·0 cites·19 claims
- 1361US9729964B2Audio apparatus having dynamic ground break resistanceAPPLE INC·Filed 2014·Granted Aug 8, 2017·1 cites·20 claims
- 1461US9247345B2Multi-channel audio system having a shared current sense element for estimating individual speaker impedancesAPPLE INC·Filed 2014·Granted Jan 26, 2016·1 cites·20 claims
- 1556US10963410B2Data bus driver with electrical energy dumpAPPLE INC·Filed 2018·Granted Mar 30, 2021·0 cites·18 claims
- 1656US9099967B2Increasing ground noise rejection in audio systemsAPPLE INC·Filed 2012·Granted Aug 4, 2015·2 cites·17 claims
- 1752US10666209B2Increased output impedance switching amplifier and low-side recycle modeAPPLE INC·Filed 2018·Granted May 26, 2020·0 cites·19 claims
- 1852US9148718B2Grounding circuit for alternate audio plug designsBREECE III DAVID C·Filed 2012·Granted Sep 29, 2015·1 cites·23 claims
- 1950US9332343B2Multi-channel audio system having a shared current sense element for estimating individual speaker impedances using test signalsAPPLE INC·Filed 2014·Granted May 3, 2016·0 cites·23 claims
- 2049US10146732B2Time-division multiplexed data bus interfaceAPPLE INC·Filed 2013·Granted Dec 4, 2018·0 cites·14 claims
- 2146US9699558B2Creation of sub-sample delays in digital audioAPPLE INC·Filed 2012·Granted Jul 4, 2017·0 cites·43 claims
- 2245US10212500B2Digital transducer circuitAPPLE INC·Filed 2017·Granted Feb 19, 2019·0 cites·22 claims
- 2344US2014113492A1Simplified led modules for electrical and optical audio jacksAPPLE INC·Filed 2013·Application pending·0 cites
- 2440US9854355B2Grounding circuit for alternate audio plug designsAPPLE INC·Filed 2015·Granted Dec 26, 2017·0 cites·22 claims
- 2537US9793658B2Reuse of plug detection contacts to reduce crosstalkAPPLE INC·Filed 2015·Granted Oct 17, 2017·0 cites·21 claims
Join the waitlist — get patent alerts
Get an alert when Nathan A. Johanningsmeier files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →