Yoshitaka Ishikawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for recycling iron and steel industry waste
- Patent number 5,843,204
- Issue date Dec 1, 1998
- Sumitomo Heavy Industries, Ltd.
- Yoshitaka Ishikawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Counterflow heat exchanger with floating plate
- Patent number 4,805,695
- Issue date Feb 21, 1989
- Sumitomo Heavy Industries, Ltd.
- Yoshitaka Ishikawa
- F28 - HEAT EXCHANGE IN GENERAL