Company Filing History:
Years Active: 2022-2025
Title: Yoko Sueyasu: Innovator in Steel Component Technology
Introduction
Yoko Sueyasu is a prominent inventor based in Tokyo, Japan. She has made significant contributions to the field of materials engineering, particularly in the development of advanced steel components. With a total of 3 patents to her name, her work has garnered attention for its innovative approaches and practical applications.
Latest Patents
One of her latest patents is for a steel shaft component. This component is characterized by its specific chemical composition, which includes C: 0.40 to 0.60%, Si: 0.05 to 1.00%, Mn: 1.00 to 2.00%, P: 0.030% or less, S: 0.005 to 0.100%, Cr: 0.10 to 0.50%, V: 0.10 to 0.30%, Al: 0.005 to 0.050%, N: 0.0050 to 0.0200%, Ti: 0 to 0.050%, with the balance being Fe and impurities. The surface of the shaft part achieves a Vickers hardness of 620 HV or more, ensuring durability and strength. Additionally, the microstructure at the R/2 position consists of ferrite and pearlite, which contributes to the component's performance.
Another notable patent is for a crankshaft and the method of manufacturing it. This crankshaft is designed with improved fatigue strength, featuring journals, pins, and fillets. Each fillet has a residual stress distribution characterized by compressive residual stresses from the surface down to a depth of at least 300 μm. The maximum value of the compressive residual stress is not lower than 1000 MPa, and the surface roughness Rz is maintained below 3.00 μm.
Career Highlights
Yoko Sueyasu is currently employed at Nippon Steel Corporation, where she continues to innovate and develop new technologies in steel manufacturing. Her work has not only advanced the field but has also contributed to the company's reputation as a leader in materials engineering.
Collaborations
Throughout her career, Yoko has collaborated with notable colleagues, including Kison Nishihara and Hiroaki Tahira. These partnerships have fostered a creative environment that encourages the exchange of ideas and