Hiroaki Masui

Follow

Person

Kimitsu, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for producing a high tension steel sheet product having an...
- Patent number RE31251
- Issue date May 24, 1983
- Nippon Steel Corporation
- Hajime Nakasugi
- 148 - Metal treatment
Information Patent Grant
Method for producing a steel sheet having remarkably excellent toug...
- Patent number 4,138,278
- Issue date Feb 6, 1979
- Nippon Steel Corporation
- Hajime Nakasugi
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for producing a high tension steel sheet product having an...
- Patent number 4,105,474
- Issue date Aug 8, 1978
- Nippon Steel Corporation
- Hajime Nakasugi
- C21 - METALLURGY OF IRON