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Inventor

Changhe Wu

Inventor
Troy, MI, US

Overview

4→
Patents
1980–2021
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.

G01Lprimary
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure29%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form14%
H01FMagnets14%
H02JElectric power networks14%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers14%
H05KPrinted circuits14%
PatentTitleYear
11,108,276High-performance shielding sheet and preparation method thereof and coil module comprising the same2021D0705750'Earphone'20144,288,835'Pressure sensor'19814,206,437'Transducer with compensation features'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1981Patents assigned to BENDIX CORP (2)· patent assignee history
1980–1981Based in Troy, MI, US· patent location history
2014Patents assigned to SHENZHEN GRANDSUN ELECTRONICS CO LTD (1)· patent assignee history
2014Patents assigned to Shenzhen grandsun electronic co ltd (1)· patent assignee history
2014Based in Guangdong, CN· patent location history
2021Patents assigned to SUNLINE PRINTING SHANGHAI ELECTRONICS CO LTD (1)· patent assignee history
2021Based in Shanghai, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BENDIX CORP21980–1981
SHENZHEN GRANDSUN ELECTRONICS CO LTD12014
SUNLINE PRINTING SHANGHAI ELECTRONICS CO LTD12021
Shenzhen grandsun electronic co ltd12014
Locations
LocationPatentsSpan
Troy, MI, US21980–1981
Shanghai, CN12021
Guangdong, CN12014