Mayumi Takayama

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Tokawa-machi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ferrofluid having improved oxidation resistance
- Patent number 5,879,580
- Issue date Mar 9, 1999
- Ferrotec Corporation
- Shiro Tsuda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ferrofluid having improved oxidation resistance
- Patent number 5,656,196
- Issue date Aug 12, 1997
- Ferrotec Corporation
- Shiro Tsuda
- H01 - BASIC ELECTRIC ELEMENTS