LexDanaLexDanabeta
Inventor

Ryohei Minami

Inventor
Ibaraki, JP

Overview

3→
Patents
1984–1992
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 compounds50%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry25%
C10GCracking hydrocarbon oils25%
PatentTitleYear
5,095,135'Process for the preparation of high-purity naphthalenecarboxylic acid esters'19924,960,914'Method for the preparation of naphthoquinone'19904,437,974'Coal liquefaction process'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1990Patents assigned to SUMITOMO METAL IND (2)· patent assignee history
1984Based in Chiba, JP· patent location history
1990Based in Ibaragi, JP· patent location history
1992Patents assigned to SUMIKIN CHEMICAL (1)· patent assignee history
1992Based in Ibaraki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO METAL IND21984–1990
SUMIKIN CHEMICAL11992
Locations
LocationPatentsSpan
Ibaraki, JP11992
Ibaragi, JP11990
Chiba, JP11984