Yamanaka Eng. Co., Ltd.

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Separator material for polymer electrolyte fuel cell having excelle...
- Patent number 10,032,537
- Issue date Jul 24, 2018
- NAKAYAMA AMORPHOUS CO., LTD.
- Ryurou Kurahashi
- C21 - METALLURGY OF IRON
Information Patent Grant
Full enclosed forging apparatus
- Patent number 6,260,400
- Issue date Jul 17, 2001
- Gohysu Corporation
- Shigeru Nishigohri
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...