LexDanaLexDanabeta
Inventor

Wenyue Qi

Inventor
Jiangsu, CN

Overview

2→
Patents
2018–2019
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 drilling25%
E21DShafts25%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels25%
G01BMeasuring length, thickness or similar linear dimensions25%
PatentTitleYear
10,352,167Process method for withdrawing and recovering mechanical constant-resistance single prop201910,113,854Device and method for detecting wall abrasion of solid filler feeding well2018

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2018–2019Patents assigned to UNIV CHINA MINING (2)· patent assignee history
2018–2019Based in Jiangsu, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV CHINA MINING22018–2019
Locations
LocationPatentsSpan
Jiangsu, CN22018–2019