Inventor

Zhichang Liu

Inventor
Beijing, CN

Overview

19→
Patents
2007–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 19 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds19%
C10GCracking hydrocarbon oils11%
Y02PClimate change mitigation technologies in the production or processing of goods11%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%
C07DHeterocyclic compounds6%
C08BPolysaccharides4%
C22BProduction and refining of metals4%
G01BMeasuring length, thickness or similar linear dimensions4%
G01DMeasuring not specially adapted for a specific variable4%
Y10TTechnical subjects covered by former us classification4%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007–2020Based in Beijing, CN· patent location history
2013–2017Patents assigned to SHELL OIL CO (9)· patent assignee history
2013–2016Patents assigned to LIU ZHICHANG (7)· patent assignee history
2013–2016Patents assigned to MENG XIANGHAI (7)· patent assignee history
2013–2016Patents assigned to XU CHUNMING (7)· patent assignee history
2013–2016Patents assigned to ZHANG RUI (7)· patent assignee history
2016–2020Based in Evanston, IL, US· patent location history
2019Based in Zhuhai, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHELL OIL CO92013–2017
LIU ZHICHANGself72013–2016
MENG XIANGHAI72013–2016
XU CHUNMING72013–2016
ZHANG RUI72013–2016
Locations
LocationPatentsSpan
Beijing, CN122007–2020
Evanston, Illinois, US52016–2020
Zhuhai, CN22019