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Inventor

Changhai Feng

Inventor
Beijing, CN

Overview

4→
Patents
2019–2021
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.

H01Lprimary
H01LSemiconductor devices14%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding7%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form7%
C23CCoating metallic material7%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%
G06TImage data processing or generation, in general7%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy7%
H05BElectric heating7%
H05KPrinted circuits7%
H10KOrganic electric solid-state devices7%
PatentTitleYear
11,088,418Battery module202110,861,728Vacuum adsorption unit and vacuum adsorption carrier202010,730,275Membrane material lamination device and membrane material lamination method using the same202010,208,375Evaporation source and evaporation device2019

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2019–2020Patents assigned to BOE TECHNOLOGY GROUP CO LTD (3)· patent assignee history
2019–2020Based in Beijing, CN· patent location history
2021Patents assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (1)· patent assignee history
2021Based in Ningde, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BOE TECHNOLOGY GROUP CO LTD32019–2020
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD12021
Locations
LocationPatentsSpan
Beijing, CN32019–2020
Ningde, CN12021