Tsuguaki Ohki

Title: Tsuguaki Ohki and Dual-Phase High-Strength Steel

Introduction

Tsuguaki Ohki is an inventor associated with Kobe Steel, Ltd., in Hyogo, Japan. His listed patent concerns a dual-phase, high-strength cold-rolled steel plate designed for applications including motor vehicles.

Latest Patents

Ohki is credited with 1 patent: “Dual phase high strength cold-rolled steel plate.” The invention specifies a steel composition containing carbon, manganese, chromium, phosphorus, and controlled amounts of silicon, aluminum, and sulfur, with iron and unavoidable impurities making up the balance.

The patent describes a steel plate that can form a greater proportion of low-temperature transformation products during a short annealing process. This is intended to lower the yield ratio and eliminate yield-point elongation without skin-pass rolling. The composition is also designed to preserve tensile strength, ductility, and galvanizing properties.

Career Highlights

Ohki’s listed invention addresses the production of high-strength cold-rolled steel with properties suited to a range of uses, including automotive manufacturing. The patent’s approach focuses on achieving the desired mechanical characteristics through steel composition and annealing, without requiring skin-pass rolling.

Collaborations

The provided information lists Masatoshi Sudo and Masanori Higashi as Ohki’s coworkers. It does not specify their roles in the patent or the extent of their collaboration.

Conclusion

Tsuguaki Ohki’s listed patent presents a composition-based approach to producing dual-phase, high-strength cold-rolled steel while maintaining properties important for manufacturing and vehicle applications.