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Inventor

Wei-Jung Chang

Inventor
Seoul, KR

Overview

3→
Patents
2003–2021
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.

G02Bprimary
G02BOptical elements, systems or apparatus25%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein25%
G06TImage data processing or generation, in general13%
H10HInorganic light-emitting semiconductor devices having potential barriers13%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1013%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1013%
PatentTitleYear
RE048690Light unit and a LCD liquid crystal display comprising the light unit202110,884,289Backlight module20216,628,818'Method for recognizing images of fine work pieces and pickup apparatus employing the method'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003Patents assigned to NEC MACHINERY CORP (1)· patent assignee history
2003Based in Shiga, JP· patent location history
2021Patents assigned to LG INNOTEK CO LTD (1)· patent assignee history
2021Patents assigned to QISDA CORP (1)· patent assignee history
2021Based in Seoul, KR· patent location history
2021Based in Taoyuan, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LG INNOTEK CO LTD12021
NEC MACHINERY CORP12003
QISDA CORP12021
Locations
LocationPatentsSpan
Seoul, KR12021
Taoyuan, TW12021
Shiga, JP12003