This inventor holds 2 USPTO granted patents. Top assignee: Kobe Steel, Ltd.. Active years: 2019-2022.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2019-2022
Title: Takeshi Kojima: Advances in Steel for Hot Forming
Introduction
Takeshi Kojima is an inventor based in Kakogawa, Japan, whose patent work focuses on steel materials and manufacturing processes for hot forming. His listed portfolio includes 2 patents, and his work is associated with Kobe Steel, Ltd.
Latest Patents
Kojima’s listed patents address steel sheets and processes designed to improve the performance of hot-formed components.
“Steel plate for hot forming and manufacturing method of hot press formed steel member” describes a steel sheet containing relatively high silicon content and a method for producing a member through hot press forming. The specified composition includes carbon, silicon, manganese, aluminum, titanium, boron, phosphorus, sulfur, and nitrogen, with iron and unavoidable impurities making up the balance. The patent also specifies an average oxygen concentration of at least 0.70 mass percent from the sheet’s outermost surface to a depth of 10 micrometers.
“Hot-dip galvannealed steel sheet for hot stamping and method for manufacturing steel part” concerns a coated steel sheet intended for hot stamping. It aims to support strong spot-welded joints and good coating-film adhesion after hot stamping and painting, while limiting restrictions on the hot-stamping process. The described material includes a silicon-containing base steel sheet and specifies conditions for manganese concentration in the plating layer, plated amount, and oxygen concentration at the interface between the plating layer and base steel.
Career Highlights
Kojima’s patent work reflects an emphasis on steel composition, surface and coating characteristics, and manufacturing methods for hot-formed steel parts. These technologies address material performance and production considerations relevant to automotive and other formed-steel applications.
Collaborations
Kojima’s listed coworkers include Hiroshi Irie and Naoki Mizuta. His work is associated with Kobe Steel, Ltd.
Conclusion
Takeshi Kojima’s patents focus on developing steel sheets and hot-forming processes that balance material properties, joining performance, and coating adhesion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile