Location History:
- Chiba, JA (1977)
- Chiba, JP (1978 - 1986)
Company Filing History:
6 out of 1,256 
1 out of 2 
1 out of 2,767 
Years Active: 1977-1986
Title: Shunichi Harada: Innovator in Tin-Free Steel Technology
Introduction
Shunichi Harada is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of materials science, particularly in the development of tin-free steel sheets. With a total of 6 patents to his name, Harada's work has had a lasting impact on the industry.
Latest Patents
One of Harada's latest patents is a method of producing tin-free steel sheets. This innovative process involves chromium plating a steel sheet in a chromium plating bath, which allows for the formation of metallic chromium and hydrated chromium oxide coatings. These coatings enhance the sheet's resistance to retorting treatment and improve adhesion to paint films. Another notable patent focuses on the production of highly rust-resistant tinplate sheets for welded cans. This process improves the rust and corrosion resistance of thinly coated tinplate by applying a nickel coating prior to annealing, followed by a tin coating and chromate treatment.
Career Highlights
Throughout his career, Shunichi Harada has worked with notable companies such as Kawasaki Steel Corporation and Kawatetsu Wire Products Company Ltd. His experience in these organizations has contributed to his expertise in steel production and innovation.
Collaborations
Harada has collaborated with several talented individuals in his field, including Motoharu Hamada and Hajime Kimura. These partnerships have fostered a collaborative environment that has led to advancements in steel technology.
Conclusion
Shunichi Harada's contributions to the development of tin-free steel technology demonstrate his innovative spirit and dedication to improving material properties. His patents continue to influence the industry and pave the way for future advancements.