Inventor

Wanchun ZHA

Inventor
CN

Overview

12→
Patents
2021–2025
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 12 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F02Cprimary
F02CGas-turbine plants21%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants19%
E21BEarth or rock drilling15%
F01DNon-positive displacement machines or engines, e.g. steam turbines11%
F02BInternal-combustion piston engines6%
H02KDynamo-electric machines6%
H02BBoards, substations or switching arrangements for the supply or distribution of electric power4%
B01DSeparation2%
B60GVehicle suspension arrangements2%
B60PVehicles adapted for load transportation or to transport, to carry, or to comprise special loads or objects2%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021–2025Patents assigned to YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD (12)· patent assignee history
2021–2025Based in CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD122021–2025
Locations
LocationPatentsSpan
CN122021–2025