Koji Kawabata

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Shin-nanyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
4,4'-bis(phthalimido)diphenyl sulfone compounds, processes for thei...
- Patent number 4,940,802
- Issue date Jul 10, 1990
- Tosoh Corporation
- Takao Matsuba
- C07 - ORGANIC CHEMISTRY