Inventor
Ruijie DU
Inventor
CN
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F04Bprimary
F04BPositive-displacement machines for liquids35%
E21BEarth or rock drilling33%
F01MLubricating of machines or engines in general7%
H02KDynamo-electric machines7%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants5%
B23PMetal-working not otherwise provided for2%
B25JManipulators2%
F01DNon-positive displacement machines or engines, e.g. steam turbines2%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general2%
F02CGas-turbine plants2%
PatentTitleYear
12,460,631Fracturing apparatus202512,442,370Fracturing equipment having multiple electric-power supplies202512,326,074Fracturing apparatus and control method thereof, fracturing system202512,297,824Plunger pump with fault diagnosis structure202512,281,648Fracturing equipment202512,247,472Fracturing apparatus202512,180,819Fracturing apparatus and control method thereof, fracturing system202412,092,097Fracturing apparatus and vibration reduction method thereof202412,078,093Turbine fracturing equipment202412,006,925Fracturing apparatus202411,859,481Fracturing apparatus202411,815,087Automatic system and method for disassembly and assembly of plunger pumps202311,746,636Fracturing apparatus and control method thereof, fracturing system202311,680,474Fracturing apparatus and control method thereof, fracturing system202311,668,289Fracturing apparatus202311,603,797Compartment unit for turbine engine202311,592,020Fracturing equipment2023Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2023–2025Patents assigned to YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD (17)· patent assignee history
2023–2025Based in CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD | 17 | 2023–2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 17 | 2023–2025 |