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Inventor

Changrong Liu

Inventor
Qingdao City, Shandong Province, CN

Overview

3→
Patents
2009–2021
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.

G05Dprimary
G05DSystems for controlling or regulating non-electric variables17%
G06FElectric digital data processing17%
G10LSpeech analysis techniques or speech synthesis17%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems17%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters17%
LOC2617%
PatentTitleYear
11,037,561Method and apparatus for voice interaction control of smart device2021D0735399'Candle light holder'20157,518,886'Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination'2009

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2009Patents assigned to VIRGINIA TECH INTELL PROP (1)· patent assignee history
2009Based in Sunnyvale, CA, US· patent location history
2015Patents assigned to LEE JERRY (1)· patent assignee history
2015Based in Dongguan, CN· patent location history
2021Patents assigned to GOERTEK INC (1)· patent assignee history
2021Based in Qingdao City, Shandong Province, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GOERTEK INC12021
LEE JERRY12015
VIRGINIA TECH INTELL PROP12009
Locations
LocationPatentsSpan
Qingdao City, Shandong Province, CN12021
Dongguan, CN12015
Sunnyvale, California, US12009