Inventor

Yasuo Sugihara

Inventor

Tokyo, JP

Overview

8→

Patents

1988–1998

Patent span

Chemistry

Primary field (CPC C)

Patents· 8 as inventor

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

C01Bprimary

C01BNon-metallic elements29%

A23BPreservation of foods, foodstuffs or non-alcoholic beverages21%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry21%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1014%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers7%

C11DDetergent compositions7%

PatentTitleYear

5,705,089'Cleaning fluid for semiconductor substrate'1998 5,614,165'Process for purification of hydrogen peroxide'1997 5,328,894'Food-preserving agent'1994 5,302,311'Cleaning solution of semiconductor substrate'1994 5,180,518'Oxygen absorbent'1993 5,102,673'Oxygen absorbent'1992 4,999,179'Method for purifying impure aqueous hydrogen peroxide solution'1991 4,792,403'Method of removing organic impurities from aqueous solution of hydrogen peroxide'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1998Patents assigned to MITSUBISHI GAS CHEMICAL CO (8)· patent assignee history

1988Based in Yokkaichi, JP· patent location history

1991–1998Based in Kashiwa, JP· patent location history

1992–1997Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI GAS CHEMICAL CO	8	1988–1998

Locations

Location	Patents	Span
Tokyo, JP	4	1992–1997
Kashiwa, JP	3	1991–1998
Yokkaichi, JP	1	1988