Inventor

Chun-Ren Cheng

Inventor
Hsinchu, TW

Overview

6→
Patents
1991–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 6 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Lprimary
H01LSemiconductor devices13%
H10DInorganic electric semiconductor devices13%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1013%
A47DFurniture specially adapted for children6%
B41JTypewriters6%
B81BMicrostructural devices or systems, e.g. micromechanical devices6%
B81CProcesses or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems6%
G01NInvestigating or analysing materials by determining their chemical or physical properties6%
G06KGraphical data reading6%
G06TImage data processing or generation, in general6%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to PETRUS IMPORTS INC (1)· patent assignee history
1991Based in Tainan, TW· patent location history
2020Patents assigned to ACER INC (1)· patent assignee history
2020Based in New Taipei, TW· patent location history
2021Patents assigned to TAIWAN SEMICONDUCTOR MFG CO LTD (4)· patent assignee history
2021Based in Hsinchu, TW· patent location history
2021Based in Hsin Chu, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TAIWAN SEMICONDUCTOR MFG CO LTD42021
ACER INC12020
PETRUS IMPORTS INC11991
Locations
LocationPatentsSpan
Hsinchu, TW22021
Hsin Chu, TW12021
New Taipei, TW12020
Tainan, TW11991