Inventor

Xu Zheng

Inventor
Guangdong, CN

Overview

8→
Patents
1991–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 8 as inventor

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

A61Kprimary
A61KPreparations for medical, dental or toiletry purposes25%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations17%
LOC1417%
C04BLime, magnesia8%
D05BSewing8%
G06FElectric digital data processing8%
H10NElectric solid-state devices not otherwise provided for8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to UNIV KYUSHU (1)· patent assignee history
1993Based in Arlington, VA, US· patent location history
2004–2006Based in Edison, NJ, US· patent location history
2006Patents assigned to LAVIPHARM LAB INC (1)· patent assignee history
2016Patents assigned to TENCENT TECH SHENZHEN CO LTD (2)· patent assignee history
2016Based in Guangdong, CN· patent location history
2017Patents assigned to ALIBABA GROUP HOLDING LTD (1)· patent assignee history
2017Based in Shanghai, CN· patent location history
2021Patents assigned to SIGMA MATTRESS MACHINERY ZHEJIANG CO LTD (1)· patent assignee history
2021Based in Taizhou, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TENCENT TECH SHENZHEN CO LTD22016
ALIBABA GROUP HOLDING LTD12017
LAVIPHARM LAB INC12006
SIGMA MATTRESS MACHINERY ZHEJIANG CO LTD12021
UNIV KYUSHU11991
Locations
LocationPatentsSpan
Guangdong, CN22016
Edison, New Jersey, US22004–2006
Taizhou, CN12021
Shanghai, CN12017
Arlington, Virginia, US11993