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Inventor

Masazumi Takaoka

Inventor
Fukuoka, JP

Overview

4→
Patents
1999–2005
Patent span
Chemistry
Primary field (CPC C)

Patents· 4 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds75%
C07DHeterocyclic compounds25%
PatentTitleYear
6,974,881'Production method of 4,6-diaminoresorcin'20056,828,461'Process for producing 1,5-diaminonaphthalene'20046,359,180'Production method of 4,6-diaminoresorcin'20025,872,260'High purity 1,3-dialkyl-2-imidazolidinone and preparation process of same'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2005Patents assigned to MITSUI CHEMICALS INC (4)· patent assignee history
1999Based in Kumamoto, JP· patent location history
2002–2005Based in Fukuoka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUI CHEMICALS INC41999–2005
Locations
LocationPatentsSpan
Fukuoka, JP32002–2005
Kumamoto, JP11999