Inventor

Hitoshi Hatakeyama

Inventor

Kanagawa, JP

Overview

4→

Patents

1991–2003

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 compounds33%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations17%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers17%

C07DHeterocyclic compounds17%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium17%

PatentTitleYear

6,555,559'5,6,7-trinor-4,8-inter-m-phenylene PGI2, derivative and drugs containing the same'2003 6,536,593'Embossed carrier tape'2003 5,220,098'Process for separating 2, 7-dimethylnaphthalene under pressure'1993 4,992,619'Process for separating methyl substituted naphthalene by crystallization under pressure'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1993Patents assigned to KOBE STEEL LTD (2)· patent assignee history

1991–1993Patents assigned to SHOWA SHELL SEKIYU (2)· patent assignee history

1991Based in Kakogawa, JP· patent location history

1993Patents assigned to PETROLEUM ENERGY CENTER FOUND (1)· patent assignee history

1993Based in Hyogo, JP· patent location history

2003Patents assigned to OKI ELECTRIC IND CO LTD (1)· patent assignee history

2003Patents assigned to TORAY INDUSTRIES (1)· patent assignee history

2003Based in Kanagawa, JP· patent location history

2003Based in Miyazaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KOBE STEEL LTD	2	1991–1993
SHOWA SHELL SEKIYU	2	1991–1993
OKI ELECTRIC IND CO LTD	1	2003
PETROLEUM ENERGY CENTER FOUND	1	1993
TORAY INDUSTRIES	1	2003

Locations

Location	Patents	Span
Kanagawa, JP	1	2003
Miyazaki, JP	1	2003
Hyogo, JP	1	1993
Kakogawa, JP	1	1991