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Hirohumi Shiigi
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Yamaguchi, JP
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last 30 patents
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Patent Grant
Process for preparation of spirofluorenols
Patent number
7,087,798
Issue date
Aug 8, 2006
Tokuyama Corporation
Hirohumi Shiigi
C07 - ORGANIC CHEMISTRY
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last 30 patents
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Patent Application
Process for preparation of spirofluorenols
Publication number
20060025636
Publication date
Feb 2, 2006
Hirohumi Shiigi
C07 - ORGANIC CHEMISTRY