Keiji Iwata

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing grain-oriented electrical steel sheet
- Patent number 8,734,658
- Issue date May 27, 2014
- Nippon Steel & Sumitomo Metal Corporation
- Keiji Iwata
- C21 - METALLURGY OF IRON
Information Patent Grant
Low core loss grain-oriented electrical steel plate and method of m...
- Patent number 8,034,196
- Issue date Oct 11, 2011
- Nippon Steel Corporation
- Keiji Iwata
- C21 - METALLURGY OF IRON
Information Patent Grant
AC output control apparatus
- Patent number 5,680,302
- Issue date Oct 21, 1997
- Nippon Steel Corporation
- Keiji Iwata
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET
- Publication number 20130092652
- Publication date Apr 18, 2013
- Keiji Iwata
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
LOW CORE LOSS GRAIN-ORIENTED ELECTRICAL STEEL PLATE AND METHOD OF M...
- Publication number 20100279141
- Publication date Nov 4, 2010
- Keiji Iwata
- C21 - METALLURGY OF IRON
Information Patent Application
Grain-Oriented Electrical Sheet Superior in Watt Loss
- Publication number 20090272464
- Publication date Nov 5, 2009
- NIPPON STEEL CORPORATION
- Hideyuki Hamamura
- C21 - METALLURGY OF IRON