Piezoelectric voice accelerometer with back cavity air pressure coupling and multiple resonance peaks
US-12568328-B2 · Mar 3, 2026 · US
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Littrell Robert John patents
Littrell Robert John is listed as an inventor on 15 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Littrell Robert John |
| Total patents | 15 |
| First publication | May 11, 2023 |
| Latest publication | Mar 3, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Microelectromechanical systems (mems) transducer overstress protection
US-2025368499-A1 · Dec 4, 2025 · US
Piezoelectric mems device for producing a signal indicative of detection of an acoustic stimulus
US-12445782-B2 · Oct 14, 2025 · US
Voltage detector in data communication interface
US-12405622-B2 · Sep 2, 2025 · US
Bone conduction microphone with resonance control based on determined audio context information
US-2025142250-A1 · May 1, 2025 · US
Piezoelectric voice accelerometer with back cavity air pressure coupling and multiple resonance peaks
US-2025097630-A1 · Mar 20, 2025 · US
Piezoelectric mems contact detection system
US-2025056164-A1 · Feb 13, 2025 · US
Voltage detector in data communication interface
US-2025028341-A1 · Jan 23, 2025 · US
Piezoelectric microelectromechanical system (mems) signal processing for contact detection
US-2024298108-A1 · Sep 5, 2024 · US
Piezoelectric mems contact detection system
US-2024295580-A1 · Sep 5, 2024 · US
Recent patents
Latest publications not already listed above.
Low noise piezoelectric sensors
US-2023422624-A1 · Dec 28, 2023 · US
Mems process power
US-2023422623-A1 · Dec 28, 2023 · US
Piezoelectric micromachined ultrasonic transducer (pmut) design
US-2023270011-A1 · Aug 24, 2023 · US
Piezoelectric micromachined ultrasonic transducer (pmut) design
US-2023270012-A1 · Aug 24, 2023 · US
Acoustic transducer with improved low-frequency response
US-2023143656-A1 · May 11, 2023 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Qualcomm Inc | 9 |
| Qualcomm Technologies Inc | 6 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H04R17/02 | 13 |
| H04R2201/003 | 11 |
| B81B2201/0257 | 4 |
| B81B2203/0118 | 4 |
| G01H11/08 | 4 |