Liu; Yongmao
Patent Applications and Registrations
Patent applications and USPTO patent grants for Liu; Yongmao.The latest application filed is for "leak-proof device for water inlet valve".
- Liu; Yongmao - Xiamen CN
- Liu; Yongmao - Xiamen City CN
- Liu; Yongmao - Fujian N/A CN
| Patent | Date |
|---|---|
| Leak-proof device for water inlet valve Grant 10,920,406 - Liu , et al. February 16, 2 | 2021-02-16 |
| Water stop valve Grant 10,920,903 - Liu , et al. February 16, 2 | 2021-02-16 |
| Leak-proof Device For Water Inlet Valve App 20200056357 - Liu; Yongmao ; et al. | 2020-02-20 |
| Water Stop Valve App 20200049273 - Liu; Yongmao ; et al. | 2020-02-13 |
| Twin water-drainage valve inner core tube starting apparatus Grant 10,161,122 - Liu Dec | 2018-12-25 |
| Major water leak prevention apparatus for water inlet valve Grant 10,132,067 - Liu , et al. November 20, 2 | 2018-11-20 |
| Minor water leak prevention apparatus for water inlet valve Grant 10,041,240 - Liu , et al. August 7, 2 | 2018-08-07 |
| Minor Water Leak Prevention Apparatus For Water Inlet Valve App 20170002555 - Liu; Yongmao ; et al. | 2017-01-05 |
| Major Water Leak Prevention Apparatus For Water Inlet Valve App 20170002946 - Liu; Yongmao ; et al. | 2017-01-05 |
| Soft-touch double-drain valve Grant 9,476,192 - Liu October 25, 2 | 2016-10-25 |
| Twin Water-drainage Valve Inner Core Tube Starting Apparatus App 20160273201 - LIU; Yongmao | 2016-09-22 |
| Water inlet valve Grant 9,441,354 - Liu , et al. September 13, 2 | 2016-09-13 |
| Water Inlet Valve App 20150211220 - Liu; Yongmao ; et al. | 2015-07-30 |
| Drain valve base Grant 8,899,549 - Liu December 2, 2 | 2014-12-02 |
| Soft-touch Double-drain Valve App 20140223656 - Liu; Yongmao | 2014-08-14 |
| Water leakage protecting device Grant 8,650,672 - Liu February 18, 2 | 2014-02-18 |
| Drain Valve Base App 20130207017 - Liu; Yongmao | 2013-08-15 |
| Water Leakage Protecting Device App 20130198944 - Liu; Yongmao | 2013-08-08 |
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