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Inventor

Qianwen Tang

Inventor
Dongying, CN

Overview

2→
Patents
2017–2018
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 drilling100%
PatentTitleYear
9,932,784Device for handling oil pipes and method for workover20189,732,570'Apparatus for tripping oil pipe and system for automatic well workover'2017

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2017–2018Patents assigned to CHINA PETROLEUM & CHEM CORP (2)· patent assignee history
2017Patents assigned to RES INST OF PETROLEUM ENG SHENGLI OIL FIELD SINOPEC (1)· patent assignee history
2017Based in Shandong, CN· patent location history
2018Patents assigned to RES INSTITUTE OF PETROLEUM ENGINEERING SHENGLI OIL FIELD SINOPEC (1)· patent assignee history
2018Based in Dongying, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHINA PETROLEUM & CHEM CORP22017–2018
RES INST OF PETROLEUM ENG SHENGLI OIL FIELD SINOPEC12017
RES INSTITUTE OF PETROLEUM ENGINEERING SHENGLI OIL FIELD SINOPEC12018
Locations
LocationPatentsSpan
Dongying, CN12018
Shandong, CN12017