LexDanaLexDanabeta
Inventor

ZHAOLAI HUA

Inventor
CN

Overview

2→
Patents
2022–2023
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 drilling29%
C04BLime, magnesia14%
E02DFoundations14%
E21DShafts14%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels14%
G01VGeophysics14%
PatentTitleYear
11,781,429Method for blocking mine water inrush202311,459,849Filling bag and sealing method for drilled hole for detection in three zones of overburden2022

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2022–2023Patents assigned to UNIV CHINA MINING (2)· patent assignee history
2022Patents assigned to SHAANXI COAL CAOJIATAN MINING CO LTD (1)· patent assignee history
2022–2023Based in CN· patent location history
2023Patents assigned to UNIV OF MINING AND TECHNOLOGY BEIJING INNER MONGOLIA RESEARCH INSTITUTE (1)· patent assignee history
2023Patents assigned to UNIV OF MINING AND TECHNOLOGY—BEIJING INNER MONGOLIA RESEARCH INSTITUTE (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV CHINA MINING22022–2023
SHAANXI COAL CAOJIATAN MINING CO LTD12022
UNIV OF MINING AND TECHNOLOGY BEIJING INNER MONGOLIA RESEARCH INSTITUTE12023
UNIV OF MINING AND TECHNOLOGY—BEIJING INNER MONGOLIA RESEARCH INSTITUTE12023
Locations
LocationPatentsSpan
CN22022–2023