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Inventor

Zhigao Zhang

Inventor
Heze, CN

Overview

2→
Patents
2014–2020
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.

E21Dprimary
E21DShafts50%
G01RMeasuring electric variables50%
PatentTitleYear
10,774,642Hydraulic support unit and hydraulic support for anti-rock burst roadway20208,823,359'Three-phase electric energy measurement apparatus'2014

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2014Patents assigned to NAT INST OF METROLOGY P R CHINA (1)· patent assignee history
2014Patents assigned to QU QINGCHANG (1)· patent assignee history
2014Based in Beijing, CN· patent location history
2020Patents assigned to BEIJING CHENGTIAN HENGYE COAL MINE EQUIPMENT CO LTD (1)· patent assignee history
2020Patents assigned to UNIV LIAONING (1)· patent assignee history
2020Patents assigned to UNIV LIAONING TECHNICAL (1)· patent assignee history
2020Based in Heze, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BEIJING CHENGTIAN HENGYE COAL MINE EQUIPMENT CO LTD12020
NAT INST OF METROLOGY P R CHINA12014
QU QINGCHANG12014
UNIV LIAONING12020
UNIV LIAONING TECHNICAL12020
Locations
LocationPatentsSpan
Heze, CN12020
Beijing, CN12014