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Inventor

Roger Chen

Inventor
Hsinchu, TW

Overview

2→
Patents
1997–2021
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.

C07Hprimary
C07HSugars33%
C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture33%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices33%
PatentTitleYear
10,996,558Multiple-mask multiple-exposure lithography and masks20215,698,528'Substance IT-62-B and medicinal composition containing the same'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997Patents assigned to TAIHO PHARMACEUTICAL CO LTD (1)· patent assignee history
1997Based in Beijing, CN· patent location history
2021Patents assigned to TAIWAN SEMICONDUCTOR MFG CO LTD (1)· patent assignee history
2021Based in Hsinchu, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TAIHO PHARMACEUTICAL CO LTD11997
TAIWAN SEMICONDUCTOR MFG CO LTD12021
Locations
LocationPatentsSpan
Hsinchu, TW12021
Beijing, CN11997