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Hirotake Ishitobi
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Chiba, JP
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last 30 patents
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Patent Grant
Process for producing grain oriented silicon steel sheet and decarb...
Patent number
5,885,374
Issue date
Mar 23, 1999
Kawasaki Steel Corporation
Hirotake Ishitobi
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing grain oriented silicon steel sheet, and decar...
Patent number
5,725,681
Issue date
Mar 10, 1998
Kawasaki Steel Corporation
Hirotake Ishitobi
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for making grain-oriented silicon steel sheet having excelle...
Patent number
5,620,533
Issue date
Apr 15, 1997
Kawasaki Steel Corporation
Keisuke Kotani
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of controlling oxygen deposition during decarbutization anne...
Patent number
5,472,520
Issue date
Dec 5, 1995
Kawasaki Steel Corporation
Yoshinori Anabuki
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of producing grain oriented silicon steel sheets having less...
Patent number
5,306,353
Issue date
Apr 26, 1994
Kawasaki Steel Corporation
Yasuyuki Hayakawa
C21 - METALLURGY OF IRON
Information
Patent Grant
Silicon steel sheets having low iron loss and method of producing t...
Patent number
5,125,991
Issue date
Jun 30, 1992
Kawasaki Steel Corporation
Hirotake Ishitobi
C21 - METALLURGY OF IRON
Information
Patent Grant
Grain oriented electromagnetic steel sheets having a very low iron...
Patent number
4,963,197
Issue date
Oct 16, 1990
Kawasaki Steel Corp.
Ujihiro Nishiike
C21 - METALLURGY OF IRON
Information
Patent Grant
Grain oriented electromagnetic steel sheets having a very low iron...
Patent number
4,906,530
Issue date
Mar 6, 1990
Kawasaki Steel Corp.
Ujiihiro Nishiike
C21 - METALLURGY OF IRON
Information
Patent Grant
Surface treatment of zinc alloy electroplated steel strips
Patent number
4,548,868
Issue date
Oct 22, 1985
Kawasaki Steel Corporation
Kazuma Yonezawa
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR