Inventor
Xinzhen He
Inventor
Beijing, CN
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling56%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids11%
G01VGeophysics11%
H01RElectrically-conductive connections11%
H02KDynamo-electric machines11%
PatentTitleYear
10,837,235Hybrid rotary guiding device202010,830,037Constant amplitude adjusting method and system for pressure pulse of drilling tool202010,815,730Anti-rotating device of non-rotating sleeve and a rotary guiding device202010,693,268Conductive slip ring for logging while drilling instrument202010,619,478Device for power transmission and signal transfer between stator and rotor of screw drilling tool2020Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2020Patents assigned to INST GEOLOGY & GEOPHYSICS CAS (5)· patent assignee history
2020Based in Beijing, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| INST GEOLOGY & GEOPHYSICS CAS | 5 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Beijing, CN | 5 | 2020 |