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Inventor

Itsuko Hamaguchi

Inventor
Kyoto, JP

Overview

3→
Patents
2002–2010
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.

C08Fprimary
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds67%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients33%
PatentTitleYear
7,700,674'Vinylpyrrolidone-based polymer composition'20106,486,281'Process for preparing high-purity vinylpyrrolidone polymer'20026,465,592'Process for preparing vinylpyrrolidone polymer'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002Patents assigned to DAI ICHI KOGYO SEIYAKU CO LTD (2)· patent assignee history
2002–2010Based in Kyoto, JP· patent location history
2010Patents assigned to DAI CHJ KOGYO SEIYAKI CO LTD (1)· patent assignee history
2010Patents assigned to NIPPON CATALYTIC CHEM IND (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DAI ICHI KOGYO SEIYAKU CO LTD22002
DAI CHJ KOGYO SEIYAKI CO LTD12010
NIPPON CATALYTIC CHEM IND12010
Locations
LocationPatentsSpan
Kyoto, JP32002–2010