LexDanaLexDanabeta
Inventor

Yoichi Osawa

Inventor
Nishikamo-gun, JP

Overview

3→
Patents
1998–1999
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds40%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices40%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
5,880,169'Sulfonium salts and chemically amplified positive resist compositions'19995,824,824'Sulfonium salts and chemically amplified positive resist compositions'19985,705,702'Method for preparing triarylsulfonium salts'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–1999Patents assigned to SHINETSU CHEMICAL CO (3)· patent assignee history
1998–1999Patents assigned to NIPPON TELEGRAPH & TELEPHONE (2)· patent assignee history
1998–1999Based in Nishikamo-gun, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHINETSU CHEMICAL CO31998–1999
NIPPON TELEGRAPH & TELEPHONE21998–1999
Locations
LocationPatentsSpan
Nishikamo-gun, JP31998–1999