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Inventor

Toshiki Sotoyama

Inventor
Ichihara, JP

Overview

3→
Patents
1983–2000
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.

C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds40%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds20%
C08JWorking-up20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
6,121,393'Process for polymerizing alpha-olefins'20004,731,433'Aromatic copolyester derived from aromatic dicarboxylic acid component and aromatic diol component'19884,390,683'Stretched film structure of the poly-1,3-phenylene terephthalate type'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1988Patents assigned to MITSUI PETROCHEMICAL IND (2)· patent assignee history
1983Based in Ohtake, JP· patent location history
1988–2000Based in Ichihara, JP· patent location history
2000Patents assigned to MITSUI CHEMICALS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUI PETROCHEMICAL IND21983–1988
MITSUI CHEMICALS12000
Locations
LocationPatentsSpan
Ichihara, JP21988–2000
Ohtake, JP11983