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Inventor

Guoqiang Chai

Inventor
Jiangsu, CN

Overview

4→
Patents
2013–2021
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.

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers44%
H03MCoding22%
G06FElectric digital data processing11%
H03FAmplifiers11%
H04SStereophonic systems11%
PatentTitleYear
11,089,400Coaxial loudspeaker20219,942,682Implementation method and device of multi-bit modulation-based digital speaker system20189,042,580'Diaphragm'20158,620,005'All-digital speaker system device'2013

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2013Patents assigned to CHAI GUOQIANG (1)· patent assignee history
2013Patents assigned to MA DENGYONG (1)· patent assignee history
2013Patents assigned to SUZHOU SONAVOX ELETRONICS CO LTD (1)· patent assignee history
2013Patents assigned to YANG JUN (1)· patent assignee history
2013–2018Based in Suzhou, CN· patent location history
2015–2021Patents assigned to SUZHOU SONAVOX ELECTRONICS CO LTD (3)· patent assignee history
2015–2021Based in Jiangsu, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUZHOU SONAVOX ELECTRONICS CO LTD32015–2021
CHAI GUOQIANGself12013
MA DENGYONG12013
SUZHOU SONAVOX ELETRONICS CO LTD12013
YANG JUN12013
Locations
LocationPatentsSpan
Jiangsu, CN22015–2021
Suzhou, CN22013–2018