Company Filing History:
Years Active: 2010-2017
Title: Masao Kinefuchi: Innovator in Steel Technology
Introduction
Masao Kinefuchi is a prominent inventor based in Kobe, Japan. He has made significant contributions to the field of steel technology, holding a total of 11 patents. His work focuses on enhancing the properties and applications of steel materials.
Latest Patents
One of Kinefuchi's latest patents is for a high-strength hot-rolled steel sheet. This innovative steel plate contains specific amounts of carbon, silicon, manganese, aluminum, vanadium, and also titanium and/or niobium. The composition is designed to fulfill the condition C−12(V/51+Ti/48+Nb/93) > 0.03, with the remainder consisting of iron and unavoidable impurities. The main microstructure of this steel is ferrite, with additional microstructures including bainite, martensite, and retained austenite. Notably, the average particle diameter of precipitated carbides, where the total content of vanadium, titanium, and niobium is 0.02% or greater, is less than 6 nm.
Another significant patent involves a fillet weld joint and method for gas shielded arc welding. This patent describes a fillet weld joint of steel formed by arc welding, where the martensitic transformation starting temperature (Ms point) of the weld metal is between 400°C and 550°C. The patent also specifies that the ratio of the toe radius of the weld to the sheet thickness must be 0.25 or above, and it satisfies the expression Ms(°C) ≤ 375×[ρ/t]+320, ensuring that no crack defects exist in the fillet weld joint.
Career Highlights
Masao Kinefuchi is associated with Kobe Steel, Ltd., a leading company in the steel industry. His work has been instrumental in advancing the technology and applications of steel products.
Collaborations
Kinefuchi has collaborated with notable coworkers, including Katsushi Matsumoto and Mikako Takeda. Their combined expertise has contributed to the development of innovative steel technologies.
Conclusion
Masao Kinefuchi's contributions to steel technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence advancements in material science and engineering.