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Inventor

Koji Ukegawa

Inventor
Tsukuba, JP

Overview

2→
Patents
1983–1991
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.

C10Gprimary
C10GCracking hydrocarbon oils100%
PatentTitleYear
5,002,655'Process for the recovery of aromatic nitrogen-containing compounds'19914,406,772'Hydroconversion of heavy hydrocarbon oils'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1991Patents assigned to AGENCY IND SCIENCE TECHN (2)· patent assignee history
1983Based in Sakura, JP· patent location history
1991Based in Tsukuba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AGENCY IND SCIENCE TECHN21983–1991
Locations
LocationPatentsSpan
Tsukuba, JP11991
Sakura, JP11983