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Inventor

Pengju Song

Inventor
Chengdu, CN

Overview

2→
Patents
2019–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 2 as inventor

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

E21Bprimary
E21BEarth or rock drilling20%
F01DNon-positive displacement machines or engines, e.g. steam turbines20%
F04DNon-positive-displacement pumps20%
F16CShafts20%
G01NInvestigating or analysing materials by determining their chemical or physical properties20%
PatentTitleYear
11,054,405Testing device and method for simulating the flowback in the shut-in period of fractured wells202110,415,634Air foil bearing2019

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2019Patents assigned to HANON SYSTEMS (1)· patent assignee history
2019Based in Daejeon, KR· patent location history
2021Patents assigned to UNIV SOUTHWEST PETROLEUM (1)· patent assignee history
2021Based in Chengdu, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HANON SYSTEMS12019
UNIV SOUTHWEST PETROLEUM12021
Locations
LocationPatentsSpan
Chengdu, CN12021
Daejeon, KR12019