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Inventor

Fumio Ohi

Inventor
Toyonaka, JP

Overview

1→
Patents
1980
Patent span
Chemistry
Primary field (CPC C)

Patents· 1 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds100%
PatentTitleYear
4,191,708'Process for preparing and purifying p-phenylenediamine'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to SUMITOMO CHEMICAL CO (1)· patent assignee history
1980Based in Toyonaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO CHEMICAL CO11980
Locations
LocationPatentsSpan
Toyonaka, JP11980