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Inventor

David Tang

Inventor
Shanghai, CN

Overview

4→
Patents
2004–2018
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication33%
H04WWireless communication networks33%
F21SNon-portable lighting devices17%
G09FDisplaying17%
PatentTitleYear
9,930,494'Leveraging location data from mobile devices for user classification'20189,699,603'Utilizing mobile wireless devices to analyze movement of crowds'20178,387,153'Communication arrangement'20136,681,508'Visual display device'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004Based in Somerville, MA, US· patent location history
2013Patents assigned to ANDREASSON TORBJOERN (1)· patent assignee history
2013Patents assigned to ENGDAHL CHRISTER (1)· patent assignee history
2013Patents assigned to ERICSSON TELEFON AB L M (1)· patent assignee history
2013Patents assigned to FROEJD MARTIN (1)· patent assignee history
2013Based in Onsala, SE· patent location history
2017–2018Patents assigned to CISCO TECH INC (2)· patent assignee history
2017–2018Based in Shanghai, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CISCO TECH INC22017–2018
ANDREASSON TORBJOERN12013
ENGDAHL CHRISTER12013
ERICSSON TELEFON AB L M12013
FROEJD MARTIN12013
Locations
LocationPatentsSpan
Shanghai, CN22017–2018
Onsala, SE12013
Somerville, Massachusetts, US12004