Company Filing History:
Years Active: 2024-2025
Title: Kazumasa Tsutsui: Innovator in Hot-Rolled Steel Technology
Introduction
Kazumasa Tsutsui, based in Tokyo, Japan, is a notable inventor who has made significant contributions to the field of metallurgy. With a total of 2 patents to his name, his work primarily focuses on advancements in hot-rolled steel sheets, demonstrating innovative approaches to enhance their mechanical properties.
Latest Patents
Kazumasa Tsutsui's most recent patents feature two distinct formulations for hot-rolled steel sheets. The first patent describes a hot-rolled steel sheet characterized by a predetermined chemical composition. This innovative sheet includes a metallographic structure containing at least 3.0% retained austenite. Notably, it boasts a ratio of 0.18 or more of a length of a grain boundary having a crystal misorientation of 52° to one with a crystal misorientation of 7° about the <110> direction. Additionally, it achieves a standard deviation of manganese concentration of 0.60 mass % or less, along with a tensile strength exceeding 1180 MPa.
The second patent also pertains to a hot-rolled steel sheet, but with a different composition. In this formulation, the microstructure contains less than 15.0% ferrite and less than 3.0% residual austenite. The ratio, L/L, of a grain boundary length with a crystal orientation difference of 52° to one with a difference of 7° about the <110> direction falls between 0.10 to 0.18. Similar to the first patent, it also maintains a standard deviation of manganese concentration at or below 0.60 mass % and achieves a tensile strength metric of at least 980 MPa.
Career Highlights
Kazumasa Tsutsui is currently employed at Nippon Steel Corporation, a leading company in the steel manufacturing industry. His dedication and innovative thinking have contributed to the development of high-performance steel products that meet the demands of modern engineering.
Collaborations
Throughout his career, Tsutsui has collaborated with esteemed colleagues, including Hiroshi Shuto and Koutarou Hayashi. These partnerships highlight the importance of teamwork and shared expertise in driving advancements in metallurgical innovation.
Conclusion
Kazumasa Tsutsui's work exemplifies the cutting-edge developments in steel technology. His patents not only reflect a deep understanding of material sciences but also pave the way for enhancements in industrial applications. As industries continue to seek stronger and more durable materials, Tsutsui’s innovations are likely to play a crucial role in shaping the future of metallurgy.