Tu; Guanfu
Patent Applications and Registrations
Patent applications and USPTO patent grants for Tu; Guanfu.The latest application filed is for "multiple ridge diamond compact for drill bit and drill bit".
- Tu; Guanfu - Hubei CN
- TU; Guanfu - WUHAN HUBEI
| Patent | Date |
|---|---|
| Polycrystalline diamond compact and drilling bit Grant 11,391,095 - Tian , et al. July 19, 2 | 2022-07-19 |
| Hybrid bit with roller cones having inserts Grant 11,326,402 - Tu , et al. May 10, 2 | 2022-05-10 |
| Multiple Ridge Diamond Compact For Drill Bit And Drill Bit App 20210277722 - LIU; Qiang ; et al. | 2021-09-09 |
| Hybrid Bit With Roller Cones Having Inserts App 20210087886 - TU; Guanfu ; et al. | 2021-03-25 |
| A Hybrid Bit With Roller Cone Having Inserts App 20200362638 - TU; Guanfu ; et al. | 2020-11-19 |
| Polycrystalline Diamond Compact and Drilling Bit App 20200347680 - TIAN; Hongping ; et al. | 2020-11-05 |
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