Liu; Chunfa
Patent Applications and Registrations
Patent applications and USPTO patent grants for Liu; Chunfa.The latest application filed is for "a magnetic circuit structure of a transducer, a transducer and an electronic device comprising the same".
Company Profile
15.22.43
- Liu; Chunfa - Shandong CN
- LIU; Chunfa - Weifang Shandong
- LIU; Chunfa - Weifang City Shandong
Patent Activity
| Patent | Date |
|---|---|
| Speaker Grant 11,457,317 - Wang , et al. September 27, 2 | 2022-09-27 |
| Speaker diaphragm and speaker Grant 11,457,316 - Wang , et al. September 27, 2 | 2022-09-27 |
| A Magnetic Circuit Structure Of A Transducer, A Transducer And An Electronic Device Comprising The Same App 20220286782 - LIU; Chunfa ; et al. | 2022-09-08 |
| Magnetic-potential Loudspeaker And Electronic Device Using The Same App 20220279281 - LIU; Chunfa ; et al. | 2022-09-01 |
| Vibration Suspension System For Transducer, Transducer And Electronic Device App 20220279280 - LIU; Chunfa ; et al. | 2022-09-01 |
| A Transducer And An Electronic Apparatus Comprising The Same App 20220272456 - LIU; Chunfa ; et al. | 2022-08-25 |
| Diaphragm For Miniature Sound Generating Device And Miniature Sound Generating Device App 20220251253 - Hui; Bing ; et al. | 2022-08-11 |
| Magnetic Potential Transducer And Electronic Apparatus Using Same App 20220232327 - LIU; Chunfa ; et al. | 2022-07-21 |
| Diaphragm For Miniature Sound-generating Device, And Miniature Sound-generating Device App 20220182762 - HUI; BING ; et al. | 2022-06-09 |
| Speaker diaphragm and speaker Grant 11,317,211 - Wang , et al. April 26, 2 | 2022-04-26 |
| Sound device and portable terminal Grant 11,317,217 - Wang , et al. April 26, 2 | 2022-04-26 |
| Sound producing unit, sound producing module, and electronic terminal Grant 11,310,603 - Cheng , et al. April 19, 2 | 2022-04-19 |
| Speaker And Portable Terminal App 20220078544 - WANG; Xinglong ; et al. | 2022-03-10 |
| Acoustic Device And Electronic Apparatus App 20220078546 - LIU; Chunfa ; et al. | 2022-03-10 |
| Acoustic Device And Electronic Apparatus App 20220070577 - LIU; Chunfa ; et al. | 2022-03-03 |
| Sounding Device And Portable Terminal App 20210368272 - WANG; Xinglong ; et al. | 2021-11-25 |
| Sound Producing Unit, Sound Producing Module, And Electronic Terminal App 20210321199 - CHENG; Hanlong ; et al. | 2021-10-14 |
| Linear vibration motor Grant 11,133,735 - Zu , et al. September 28, 2 | 2021-09-28 |
| Sound Device And Portable Terminal App 20210274289 - WANG; Xinglong ; et al. | 2021-09-02 |
| Speaker Diaphragm And Speaker App 20210274285 - Wang; Ting ; et al. | 2021-09-02 |
| Speaker App 20210274288 - Wang; Ting ; et al. | 2021-09-02 |
| Speaker Diaphragm And Speaker App 20210274286 - Wang; Ting ; et al. | 2021-09-02 |
| Speaker Diaphragm And Speaker App 20210266672 - Wang; Ting ; et al. | 2021-08-26 |
| Sound Production Apparatus And Portable Terminal App 20210266673 - Wang; Xinglong ; et al. | 2021-08-26 |
| Sound Production Device and Portable Terminal App 20210266671 - Wang; Xinglong ; et al. | 2021-08-26 |
| Speaker Diaphragm And Speaker App 20210258707 - Wang; Ting ; et al. | 2021-08-19 |
| Speaker App 20210258695 - Wang; Ting ; et al. | 2021-08-19 |
| Speaker Diaphragm And Speaker App 20210258692 - Wang; Ting ; et al. | 2021-08-19 |
| Sound Producing Unit, Sound Producing Module, And Electronic Terminal App 20210235196 - CHENG; Hanlong ; et al. | 2021-07-29 |
| Speaker Diaphragm And Speaker App 20210120340 - Wang; Ting ; et al. | 2021-04-22 |
| Self-adaptive control miniature motor Grant 10,944,313 - Zu , et al. March 9, 2 | 2021-03-09 |
| Linear vibration motor Grant 10,886,827 - Liu , et al. January 5, 2 | 2021-01-05 |
| Linear vibration motor Grant 10,784,758 - Liu , et al. Sept | 2020-09-22 |
| Linear vibration motor Grant 10,763,732 - Liu , et al. Sep | 2020-09-01 |
| Linear vibration motor Grant 10,707,737 - Liu , et al. | 2020-07-07 |
| Magnetically balancing guided linear vibration motor Grant 10,658,914 - Zu , et al. | 2020-05-19 |
| Linear vibration motor Grant 10,637,339 - Liu , et al. | 2020-04-28 |
| Linear vibration motor Grant 10,536,065 - Liu , et al. Ja | 2020-01-14 |
| Linear vibration motor Grant 10,530,231 - Liu , et al. J | 2020-01-07 |
| Linear Vibration Motor And Electronic Device App 20190379263 - Zhu; Yueguang ; et al. | 2019-12-12 |
| Silica gel diaphragm, receiver module, and method for processing silica gel diaphragm Grant 10,375,462 - Liu , et al. | 2019-08-06 |
| Multifunctional device with vibration function and sound generation function Grant 10,341,778 - Liu , et al. | 2019-07-02 |
| Silica gel diaphragm, speaker module, and method for reprocessing silica gel diaphragm Grant 10,284,958 - Liu , et al. | 2019-05-07 |
| Linear Vibration Motor App 20190052161 - ZU; Fenglei ; et al. | 2019-02-14 |
| Linear Vibrating Motor App 20190044425 - ZU; Fenglei ; et al. | 2019-02-07 |
| Multifunctional Device With Vibration Function And Sound Generation Function App 20190020954 - Liu; Chunfa ; et al. | 2019-01-17 |
| Linear Vibration Motor App 20190006926 - Zhu; Yueguang ; et al. | 2019-01-03 |
| Linear vibration motor App 20180375415 - LIU; Chunfa ; et al. | 2018-12-27 |
| Linear Vibration Motor App 20180358878 - LIU; Chunfa ; et al. | 2018-12-13 |
| Linear Vibration Motor App 20180358879 - Liu; Chunfa ; et al. | 2018-12-13 |
| Linear Vibration Motor App 20180358880 - Liu; Chunfa ; et al. | 2018-12-13 |
| Linear Vibration Motor App 20180351443 - LIU; Chunfa ; et al. | 2018-12-06 |
| Linear Vibration Motor App 20180351442 - Liu; Chunfa ; et al. | 2018-12-06 |
| Linear Vibration Motor App 20180331608 - Liu; Chunfa ; et al. | 2018-11-15 |
| Self-adaptive Control Miniature Motor App 20180287477 - ZU; Fenglei ; et al. | 2018-10-04 |
| Magnetically Balancing Guided Linear Vibration Motor App 20180241295 - Zu; Fenglei ; et al. | 2018-08-23 |
| Silica Gel Diaphragm, Speaker Module, And Method For Reprocessing Silica Gel Diaphragm App 20180077495 - LIU; Chunfa ; et al. | 2018-03-15 |
| Silica Gel Diaphragm, Receiver Module, And Method For Processing Silica Gel Diaphragm App 20180035191 - LIU; Chunfa ; et al. | 2018-02-01 |
| Miniature electroacoustic transducer and assembling method thereof Grant 9,549,262 - Wang , et al. January 17, 2 | 2017-01-17 |
| Moving-coil electroacoustic transducer Grant 9,369,806 - Wang , et al. June 14, 2 | 2016-06-14 |
| Moving-coil Electroacoustic Transducer App 20150146912 - Wang; Jianjian ; et al. | 2015-05-28 |
| Miniature Electroacoustic Transducer And Assembling Method Thereof App 20150016659 - Wang; Ze ; et al. | 2015-01-15 |
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