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Inventor

Mingting Han

Inventor
Harbin, CN

Overview

2→
Patents
2019–2020
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 2 as inventor

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

E21Bprimary
E21BEarth or rock drilling50%
F04BPositive-displacement machines for liquids25%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters25%
PatentTitleYear
10,539,129Electric machine driving method and system under non-conventional work mode of oil pumping unit202010,502,038Combined operation method for work modes of walking beam pumping unit2019

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2019–2020Patents assigned to HARBIN SURFICS ELECTRICAL TECH INC (2)· patent assignee history
2019–2020Based in Harbin, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HARBIN SURFICS ELECTRICAL TECH INC22019–2020
Locations
LocationPatentsSpan
Harbin, CN22019–2020