LexDanaLexDanabeta
Inventor

JUNFENG GUO

Inventor
CN

Overview

2→
Patents
2021–2023
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

B61Dprimary
B61DBody details or kinds of railway vehicles25%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels25%
G01NInvestigating or analysing materials by determining their chemical or physical properties25%
G05DSystems for controlling or regulating non-electric variables25%
PatentTitleYear
11,772,687Low-energy-consumption grading and positioning method for coal mine auxiliary transportation vehicle and system thereof202311,181,458Method for processing filter to obtain calibration dust filter, and method for off-site calibration using calibration dust filter2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021Patents assigned to CHINESE RES ACAD ENV SCIENCES (1)· patent assignee history
2021–2023Based in CN· patent location history
2023Patents assigned to UNIV CHINA MINING (1)· patent assignee history
2023Patents assigned to XUZHOU KERUI MINING TECH CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHINESE RES ACAD ENV SCIENCES12021
UNIV CHINA MINING12023
XUZHOU KERUI MINING TECH CO LTD12023
Locations
LocationPatentsSpan
CN22021–2023