Shigeo Iiri

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Methods for preparing high-purity molybdenum or tungsten powder and...
- Patent number 4,762,695
- Issue date Aug 9, 1988
- Kabushiki Kaisha Toshiba
- Hiroshi Endo
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of producing barium-ferrite series powder
- Patent number 4,414,124
- Issue date Nov 8, 1983
- Tokyo Shibaura Denki Kabushiki Kaisha
- Hiroshi Endo
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES