Keiichi Sadahiro

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Variable directivity antenna and method of controlling variable dir...
- Patent number 6,049,310
- Issue date Apr 11, 2000
- Mitsubishi Denki Kabushiki Kaisha
- Keiichi Sadahiro
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
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- Publication number 20040029539
- Publication date Feb 12, 2004
- Keiichi Sadahiro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE