Yoshitaka Yoshinaga

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Hiroshima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Spindle-like magnetic iron oxide particles and process for producin...
- Patent number 4,873,010
- Issue date Oct 10, 1989
- Toda Kogyo Corp.
- Atsushi Takedoi
- G11 - INFORMATION STORAGE
Information Patent Grant
Spindle ferromagnetic alloy particles
- Patent number 4,773,931
- Issue date Sep 27, 1988
- Toda Kogyo Corp.
- Akio Mishima
- B22 - CASTING POWDER METALLURGY