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Inventor

Alex Cheng

Inventor
Shanghai, CN

Overview

2→
Patents
2001–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

C08Jprimary
C08JWorking-up17%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients17%
C08LCompositions of macromolecular compounds17%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices17%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy17%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution17%
PatentTitleYear
10,938,065Polymer electrolyte membrane and method for preparing same20216,248,484'Hybrid alignment marks for optimal alignment of three-dimensional layers'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001Patents assigned to CHARTERED SEMICONDUCTOR MFG (1)· patent assignee history
2001Based in Singapore, SG· patent location history
2021Patents assigned to SHANGHAI ENERGY NEW MAT TECH 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
CHARTERED SEMICONDUCTOR MFG12001
SHANGHAI ENERGY NEW MAT TECH CO LTD12021
Locations
LocationPatentsSpan
Shanghai, CN12021
Singapore, SG12001