Application device
US-12445780-B2 · Oct 14, 2025 · US
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Liu Chunfa patents
Liu Chunfa is listed as an inventor on 127 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Liu Chunfa |
| Total patents | 127 |
| First publication | May 28, 2015 |
| Latest publication | Oct 14, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Sound production apparatus and electronic device
US-12432501-B2 · Sep 30, 2025 · US
Sound production apparatus and electronic device
US-12432502-B2 · Sep 30, 2025 · US
Application device including an elastic member
US-12375858-B2 · Jul 29, 2025 · US
Dome and diaphragm assembly for sound producing apparatus, sound producing apparatus, and electronic device
US-2025203291-A1 · Jun 19, 2025 · US
Sound generation device and electronic apparatus
US-12323781-B2 · Jun 3, 2025 · US
Housing of sound production device, sound production device, and electronic apparatus
US-2025175735-A1 · May 29, 2025 · US
Housing of sound generating device, sound generating device and electronic apparatus thereof
US-2025175725-A1 · May 29, 2025 · US
Diaphragm for miniature sound generating device and miniature sound generating device
US-12312428-B2 · May 27, 2025 · US
Sound production module and terminal device
US-2025168569-A1 · May 22, 2025 · US
Recent patents
Latest publications not already listed above.
Sound generating module and electronic device
US-2025159412-A1 · May 15, 2025 · US
Diaphragm for sound producing device, sound producing device, and method for assembling the same
US-12256206-B2 · Mar 18, 2025 · US
Vibrating diaphragm of sound-producing apparatus and sound-producing apparatus
US-12200459-B2 · Jan 14, 2025 · US
Vibrating diaphragm of sound-producing apparatus and sound-producing apparatus
US-12163000-B2 · Dec 10, 2024 · US
Sound generating apparatus and electronic device
US-12160722-B2 · Dec 3, 2024 · US
Sound-producing device and electronic terminal
US-12149907-B2 · Nov 19, 2024 · US
Damper and sound-producing device
US-12149909-B2 · Nov 19, 2024 · US
Vibrating diaphragm of sound-producing apparatus and sound-producing apparatus
US-12143791-B2 · Nov 12, 2024 · US
Magnetic-potential loudspeaker and electronic device using the same
US-12114145-B2 · Oct 8, 2024 · US
Acoustic device and electronic apparatus
US-12096179-B2 · Sep 17, 2024 · US
Speaker and portable terminal
US-12096177-B2 · Sep 17, 2024 · US
Sound-producing device and electronic terminal
US-12081957-B2 · Sep 3, 2024 · US
Sound-producing device
US-12058503-B2 · Aug 6, 2024 · US
Transducer vibration suspension system for transducer for improving the electrical-mechanical conversion efficiency of an electronic device
US-12022273-B2 · Jun 25, 2024 · US
Magnetic potential transducer and electronic apparatus using same
US-12010500-B2 · Jun 11, 2024 · US
Sound-producing device and electronic terminal
US-2024155294-A1 · May 9, 2024 · US
Damper and Sound-Producing Device
US-2024155295-A1 · May 9, 2024 · US
Sound-producing device
US-11979731-B2 · May 7, 2024 · US
Sound-producing device
US-11979729-B2 · May 7, 2024 · US
Sound generator and audio device
US-2024147163-A1 · May 2, 2024 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Goertek Inc | 126 |
| Wang Ze | 2 |
| Ge Lianshan | 2 |
| Liu Chunfa | 2 |
| Goertek Inc | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H04R9/06 | 95 |
| H04R9/025 | 65 |
| H04R9/02 | 54 |
| H04R2400/11 | 46 |
| H04R9/043 | 32 |