Speed Regulating Apparatus, Plunger Pump, and Fracturing Device
US-2025223952-A1 · Jul 10, 2025 · US
This page is not indexed by search engines while we improve data quality.
Liu Weichen patents
Liu Weichen is listed as an inventor on 5 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Liu Weichen |
| Total patents | 5 |
| First publication | Oct 27, 2022 |
| Latest publication | Jul 10, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Valve spring fixing device and plunger pump
US-12085073-B2 · Sep 10, 2024 · US
Valve spring fixing device and plunger pump
US-2023017968-A1 · Jan 19, 2023 · US
Valve spring seat sleeve, valve assembly and plunger pump
US-11519405-B2 · Dec 6, 2022 · US
Valve spring seat sleeve, valve assembly and plunger pump
US-2022341415-A1 · Oct 27, 2022 · US
Recent patents
Latest publications not already listed above.
No data yet.
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Yantai Jereh Petroleum Equipment & Technologies Co Ltd | 5 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| F04B53/1032 | 4 |
| F04B53/10 | 4 |
| F04B53/1087 | 2 |
| F04B53/22 | 2 |
| F04B53/1072 | 2 |