Inventor

Fumio Tsutsumi

Inventor

Yokkaichi, JP

Overview

1984–2003

Patent span

Chemistry

Primary field (CPC C)

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

C08Lprimary

C08LCompositions of macromolecular compounds33%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds18%

C08CTreatment or chemical modification of rubbers13%

B60CVehicle tyres11%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds4%

Y02TClimate change mitigation technologies related to transportation2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1984–1997Patents assigned to JAPAN SYNTHETIC RUBBER CO LTD (16)· patent assignee history

1984–1989Patents assigned to BRIDGESTONE TIRE CO LTD (2)· patent assignee history

1984–1999Based in Yokkaichi, JP· patent location history

1988–1993Patents assigned to BRIDGESTONE CORP (7)· patent assignee history

1992Based in Chiba, JP· patent location history

1999–2003Patents assigned to JSR CORP (4)· patent assignee history

2000–2003Based in Tokyo, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
JAPAN SYNTHETIC RUBBER CO LTD	16	1984–1997
BRIDGESTONE CORP	7	1988–1993
JSR CORP	4	1999–2003
BRIDGESTONE TIRE CO LTD	2	1984–1989

Locations