Akihisa Harada

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Kitakyushu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for the treatment of slag generated in an ironworks
- Patent number 4,747,547
- Issue date May 31, 1988
- Nippon Jiryoku Senko Co., Ltd.
- Akihisa Harada
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of treating dust and sludge simultaneously with steel slag
- Patent number 4,725,307
- Issue date Feb 16, 1988
- Nippon Jiryoku Senko Co., Ltd.
- Akihisa Harada
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for the simultaneous treatment of dust, sludge and steel slag
- Patent number 4,711,662
- Issue date Dec 8, 1987
- Nippon Jiryoku Senko Co., Ltd.
- Akihisa Harada
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...