Company Filing History:
Years Active: 2013-2025
Title: Shigenobu Namba: Innovator in Maraging Steel
Introduction
Shigenobu Namba, an esteemed inventor based in Kobe, Japan, has made significant contributions to the field of materials science through his innovative work with maraging steel. With four patents to his name, Namba’s expertise lies in developing advanced steel compositions that enhance performance and durability in various applications.
Latest Patents
Among his latest patents, Namba introduced a groundbreaking invention related to maraging steel and its manufacturing method. This advanced maraging steel comprises specific elemental percentages, including C: 0.02% or less, Si: 0.3% or less, Mn: 0.3% or less, Ni: 7.0 to 15.0%, Cr: 5.0% or less, Co: 8.0 to 12.0%, Mo: 0.1 to 2.0%, Ti: 1.0 to 3.0%, and Sol.Al: 0.01 to 0.2%. The composition ensures a balanced mixture, with Fe making up the majority and containing limited impurities. The maraging steel features a martensitic parent phase, which is critical for achieving desirable material properties.
In addition, Namba has also developed a heat-resistant austenitic stainless steel that incorporates Ce and Zr, designed to withstand extreme temperatures without experiencing scale exfoliation. This innovative material has an Hv/Hv ratio of 1.20 or higher, indicating its superior hardness and structural integrity.
Career Highlights
Shigenobu Namba is associated with Kobe Steel, Ltd., one of the leading companies in the steel industry. His role in advancing material properties and contributing to the field has solidified his status as a notable inventor. Namba continues to push boundaries by focusing on the intersection of material science and practical application.
Collaborations
Namba’s work has not gone unnoticed, as he collaborates with talented professionals like Takeo Miyamura and Hideo Hata. These collaborations enhance the innovative process, allowing for shared expertise and knowledge that further drives advancements in steel technology.
Conclusion
Through his innovative contributions and collaborations, Shigenobu Namba stands out as a remarkable inventor in the field of maraging steel. His patented inventions not only exemplify cutting-edge material science but also contribute to highly functional applications across various industries. Namba's continuous pursuit of innovation reflects the dynamic nature of creativity in engineering and technology.