Kazunari Hashizume

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Patents Grantslast 30 patents

Information Patent Grant
Oxidizable color producing reagent
- Patent number 5,238,818
- Issue date Aug 24, 1993
- Wako Pure Chemicals Co., Ltd.
- Kazunari Hashizume
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Oxidizable color producing reagent
- Patent number 5,164,512
- Issue date Nov 17, 1992
- Wako Pure Chemical Industries, Ltd.
- Kazunari Hashizume
- C07 - ORGANIC CHEMISTRY