Sadao Hirotsu

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Yamaguchi, JP

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Patents Grantslast 30 patents

Information Patent Grant
High strength and toughness stainless steel strip and process for t...
- Patent number 5,494,537
- Issue date Feb 27, 1996
- Nisshin Steel Co. Ltd.
- Katsuhisa Miyakusu
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Martensitic precipitation-hardenable stainless steel
- Patent number 5,035,855
- Issue date Jul 30, 1991
- Nisshin Steel Company, Ltd.
- Takeshi Utsunomiya
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
High strength stainless steel
- Patent number 4,849,166
- Issue date Jul 18, 1989
- Nisshin Steel Company, Ltd.
- Kazuo Hoshino
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Slicing saw blade
- Patent number 4,847,168
- Issue date Jul 11, 1989
- Nisshin Steel Co., Ltd.
- Sadao Hirotsu
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Precipitation hardening type stainless steel for spring
- Patent number 4,378,246
- Issue date Mar 29, 1983
- Nisshin Steel Co., Ltd.
- Kazuo Hoshino
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...