Inventor

Qun Liu

Inventor
Columbia, MD, US

Overview

18→
Patents
1998–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 18 as inventor

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

A61Pprimary
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations15%
C07DHeterocyclic compounds12%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application10%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact7%
Y10TTechnical subjects covered by former us classification7%
F25BRefrigeration machines, plants or systems5%
G01NInvestigating or analysing materials by determining their chemical or physical properties5%
G06FElectric digital data processing5%
H01JElectric discharge tubes or discharge lamps5%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling2%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–1999Patents assigned to FORD MOTOR CO (3)· patent assignee history
1998–1999Based in Grosse Ile, MI, US· patent location history
2005–2012Based in Columbia, MD, US· patent location history
2007–2008Patents assigned to MGI GP INC (2)· patent assignee history
2009–2013Patents assigned to LIU QUN (4)· patent assignee history
2009–2012Patents assigned to WANG TIANXIN (2)· patent assignee history
2010–2012Patents assigned to EISAI INC (2)· patent assignee history
2013–2019Based in Beijing, CN· patent location history
2018Based in Wuhan, CN· patent location history
2020Based in Jiangsu, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LIU QUNself42009–2013
FORD MOTOR CO31998–1999
EISAI INC22010–2012
MGI GP INC22007–2008
WANG TIANXIN22009–2012
Locations
LocationPatentsSpan
Columbia, Maryland, US72005–2012
Beijing, CN32013–2019
Grosse Ile, MI, US31998–1999
Jiangsu, CN12020
Wuhan, CN12018