Location History:
- Higashi-Hiroshima, JP (1990)
- Hiroshima, JP (1997)
Company Filing History:
2 out of 4,682 
1 out of 1,100 Years Active: 1990-1997
Title: Innovations of Yoshihiko Kojima
Introduction
Yoshihiko Kojima is a notable inventor based in Higashihiroshima, Japan. He has made significant contributions to the field of manufacturing, particularly in the development of methods for producing case-hardened steel parts. With a total of 2 patents to his name, his work has advanced the understanding and application of heat treatment processes in metallurgy.
Latest Patents
Kojima's latest patents include a "Method of manufacturing case-hardened parts with little distortion" and a "Method of carburizing spheroidizing and quenching." The first patent describes a manufacturing method that involves a two-step heat treatment process. This process allows for the production of case-hardened steel products that exhibit high precision and strength. The second patent outlines a three-step method for carburizing and quenching steel members, which enhances the surface carbon concentration and improves the material properties.
Career Highlights
Throughout his career, Yoshihiko Kojima has worked with prominent companies such as Mazda Motor Corporation and Kobe Steel, Ltd. His experience in these organizations has contributed to his expertise in the field of metallurgy and manufacturing processes.
Collaborations
Kojima has collaborated with notable colleagues, including Yukio Arimi and Hisao Maeda. These partnerships have likely enriched his research and development efforts, leading to innovative solutions in manufacturing.
Conclusion
Yoshihiko Kojima's contributions to the field of manufacturing through his patents and collaborations highlight his role as a significant inventor. His innovative methods for heat treatment and steel processing continue to influence the industry.