Masaru Kawai

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Patents Grantslast 30 patents

Information Patent Grant
Manufacturing method of rotor core
- Patent number 7,676,902
- Issue date Mar 16, 2010
- Hitachi, Ltd.
- Masaru Kawai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Manufacturing method of rotor core and device using the same
- Publication number 20040205955
- Publication date Oct 21, 2004
- Hitachi, Ltd.
- Masaru Kawai
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...