Masahiro Aoki

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Patents Grantslast 30 patents

Information Patent Grant
Manufacturing process for plate or forging of ferrite-austenite two...
- Patent number 4,659,397
- Issue date Apr 21, 1987
- Nippon Stainless Steel Co. Ltd.
- Mineo Kobayashi
- C21 - METALLURGY OF IRON
Information Patent Grant
Welding material for austenite stainless steel having high Si conte...
- Patent number 4,653,684
- Issue date Mar 31, 1987
- Nippon Stainless Steel Co. Ltd.
- Kiichi Saito
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Welding material of ferrite-austenite two-phase stainless steel and...
- Patent number 4,585,479
- Issue date Apr 29, 1986
- Sumitomo Chemical Co., Ltd.
- Masahiro Aoki
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for improving surface defect of specific steel resistant to...
- Patent number 4,381,941
- Issue date May 3, 1983
- Sumitomo Chemical Company, Limited
- Naoya Ito
- C21 - METALLURGY OF IRON
Information Patent Grant
High silicon chromium nickel steel for strong nitric acid
- Patent number 4,279,648
- Issue date Jul 21, 1981
- Sumitomo Chemical Company, Limited
- Naoya Ito
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...