Fumio Tomizawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for automatically charging scrap into an arc furnace
- Patent number 4,694,465
- Issue date Sep 15, 1987
- Ishikawajima-Harima Jukogyo Kabushiki Kaisha
- Toshio Nanjo
- C21 - METALLURGY OF IRON
Information Patent Grant
Shroud for arc furnace
- Patent number 4,638,487
- Issue date Jan 20, 1987
- Ishikawajima-Harima Jukogyo Kabushiki Kaisha
- Fumio Tomizawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Cooling pipe structure for arc furnace
- Patent number 4,434,495
- Issue date Feb 28, 1984
- Ishikawajima-Harima Jukogyo Kabushiki Kaisha
- Fumio Tomizawa
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Shroud for steel making electric-arc furnace
- Patent number 4,395,023
- Issue date Jul 26, 1983
- Ishikawajima-Harima Jukogyo Kabushiki Kaisha
- Fumio Tomizawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Direct reduction process for iron ores with fluidized bed system
- Patent number 4,224,056
- Issue date Sep 23, 1980
- Ishikawajima-Harima Jukogyo Kabushiki Kaisha
- Fumio Tomizawa
- C21 - METALLURGY OF IRON