Masaaki Mikura

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Nagoya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Manufacturing method of valve spring superior in durability
- Patent number 6,027,577
- Issue date Feb 22, 2000
- Chuo Hatsujo Kabushiki Kaisha
- Masaaki Mikura
- C21 - METALLURGY OF IRON
Information Patent Grant
High strength spring steel and process for producing same
- Patent number 5,897,717
- Issue date Apr 27, 1999
- Nippon Steel Corporation
- Masayuki Hashimura
- C21 - METALLURGY OF IRON