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Inventor

Junko Umezawa

Inventor
Toda, JP

Overview

2→
Patents
1991–1997
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.

C07Cprimary
C07CAcyclic or carbocyclic compounds50%
C07DHeterocyclic compounds50%
PatentTitleYear
5,661,153'1-arylpyrimidine derivatives and pharmaceutical use thereof'19975,041,641'Pentafluorophenyl derivatives, methods of production thereof, and method of optical resolution of chiral carboxylic acids'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to NIPPON MINING CO (1)· patent assignee history
1991–1997Based in Toda, JP· patent location history
1997Patents assigned to JAPAN ENERGY CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JAPAN ENERGY CORP11997
NIPPON MINING CO11991
Locations
LocationPatentsSpan
Toda, JP21991–1997