CHAI; Guoqiang
Patent Applications and Registrations
Patent applications and USPTO patent grants for CHAI; Guoqiang.The latest application filed is for "magnetic circuit of loudspeaker and loudspeaker".
- CHAI; Guoqiang - Suzhou Jiangsu
- Chai; Guoqiang - Jiangsu CN
- Chai; Guoqiang - Suzhou City CN
| Patent | Date |
|---|---|
| Magnetic Circuit Of Loudspeaker And Loudspeaker App 20220232325 - SHEN; Yuewu ; et al. | 2022-07-21 |
| Mid-range Loudspeaker App 20220150639 - CHAI; Guoqiang ; et al. | 2022-05-12 |
| Speaker packaging device and package body Grant 11,312,530 - Wang , et al. April 26, 2 | 2022-04-26 |
| High-pitched loudspeaker Grant 11,290,822 - Gao , et al. March 29, 2 | 2022-03-29 |
| Pedestrian warning device having grille cover Grant 11,279,278 - Xue , et al. March 22, 2 | 2022-03-22 |
| Pedestrian Alert Device For Electric Vehicle App 20220005345 - DING; Hongbing ; et al. | 2022-01-06 |
| Pedestrian Warning Device Having Grille Cover App 20210309146 - Xue; Xiafeng ; et al. | 2021-10-07 |
| Coaxial loudspeaker Grant 11,089,400 - Tao , et al. August 10, 2 | 2021-08-10 |
| A Coaxial Loudspeaker App 20210136482 - TAO; SHENGGANG ; et al. | 2021-05-06 |
| Speaker Packaging Device and Package Body App 20210130034 - Wang; Yu ; et al. | 2021-05-06 |
| A High-pitched Loudspeaker App 20210099803 - GAO; PENG ; et al. | 2021-04-01 |
| Automotive headrest Grant 10,960,803 - Fu , et al. March 30, 2 | 2021-03-30 |
| Automotive Headrest App 20200010002 - Fu; Tingting ; et al. | 2020-01-09 |
| Implementation method and device of multi-bit modulation-based digital speaker system Grant 9,942,682 - Ma , et al. April 10, 2 | 2018-04-10 |
| Implementation Method And Device Of Multi-bit Modulation-based Digital Speaker System App 20160309274 - MA; DENGYONG ; et al. | 2016-10-20 |
| Diaphragm Grant 9,042,580 - Gao , et al. May 26, 2 | 2015-05-26 |
| Diaphragm App 20140119577 - Gao; Peng ; et al. | 2014-05-01 |
| All-digital speaker system device Grant 8,620,005 - Ma , et al. December 31, 2 | 2013-12-31 |
| Diaphragm Used In A Loudspeaker And A Loudspeaker App 20120269379 - GAO; Peng ; et al. | 2012-10-25 |
| All-digital speaker system device App 20120099740 - Ma; Dengyong ; et al. | 2012-04-26 |
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