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Inventor

Zheng Ma

Inventor
Guangdong, CN

Overview

3→
Patents
2005–2019
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G06Fprimary
G06FElectric digital data processing29%
H04LTransmission of digital information, e.g. telegraphic communication29%
G01RMeasuring electric variables14%
G07CTime or attendance registers14%
H02JElectric power networks14%
PatentTitleYear
10,198,570Dynamic password lock and remote password lock apparatus20199,501,117'Identification circuit for power sourcing equipment, and powered device'20166,947,376'Local information-based restoration arrangement'2005

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005Patents assigned to AT & T CORP (1)· patent assignee history
2005Based in Murray Hill, NJ, US· patent location history
2016Patents assigned to HUAWEI TECH CO LTD (1)· patent assignee history
2016Based in Shenzhen, CN· patent location history
2019Patents assigned to SGSG SCIENCE & TECH CO LTD ZHUHAI (1)· patent assignee history
2019Based in Guangdong, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AT & T CORP12005
HUAWEI TECH CO LTD12016
SGSG SCIENCE & TECH CO LTD ZHUHAI12019
Locations
LocationPatentsSpan
Guangdong, CN12019
Shenzhen, CN12016
Murray Hill, New Jersey, US12005