Akira Hirai

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Fuji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Chemical solubilizing agent for tin or tin alloy
- Patent number 5,223,087
- Issue date Jun 29, 1993
- Tokai Denka Kogyo Kabushiki Kaisha
- Katsutoshi Itani
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Surface-treating agents for copper and copper alloy
- Patent number 5,030,373
- Issue date Jul 9, 1991
- Tokai Denka Kogyo Kabushiki Kaisha
- Toshiya Kimura
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...