Wu; Zhongya
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wu; Zhongya.The latest application filed is for "mine exploitation based on stoping, separation and filling control".
- Wu; Zhongya - Jiangsu CN
- WU; Zhongya - Xuzhou Jiangsu
| Patent | Date |
|---|---|
| Method of recovering room-and-pillar coal pillar by using external replacement supports Grant 11,021,954 - Zhou , et al. June 1, 2 | 2021-06-01 |
| Base mechanism of single prop capable of being unloaded at reduced pressure Grant 10,895,154 - Zhang , et al. January 19, 2 | 2021-01-19 |
| Mine Exploitation Based On Stoping, Separation And Filling Control App 20200408094 - ZHANG; Jixiong ; et al. | 2020-12-31 |
| Method Of Recovering Room-and-pillar Coal Pillar By Using External Replacement Supports App 20200318480 - ZHOU; Nan ; et al. | 2020-10-08 |
| Base Mechanism Of Single Prop Capable Of Being Unloaded At Reduced Pressure App 20200300088 - ZHANG; Qiang ; et al. | 2020-09-24 |
| Method For Determining Internal Stress Of Solid-cut-and-fill Material App 20200241169 - Li; Meng ; et al. | 2020-07-30 |
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