Location History:
- Nagareyama, JP (2000)
- Ichikawa, JP (2001 - 2005)
Company Filing History:
4 out of 898 
2 out of 2 Years Active: 2000-2005
Title: The Innovative Contributions of Yoshiro Ishii
Introduction
Yoshiro Ishii, a prominent inventor based in Ichikawa, Japan, has made significant advancements in the field of materials technology. With a total of four patents to his name, Ishii’s work primarily revolves around enhancing the functionalities and applications of cutting tools and substrates. His innovative approach has played a vital role in the development of various industrial materials.
Latest Patents
Ishii's latest patents include two notable inventions. The first is a **Two-layer copper polyimide substrate**, which features a modified surface layer on a polyimide film. This invention is evaluated using a specific method involving a silver nitrate aqueous solution and transmission electron microscopy (TEM). The substrate is designed for superior adhesion and heat resistance, making it highly effective under strict conditions.
The second patent is for a **Surface treated steel cutting tool**. This invention presents an affordable steel cutting tool that showcases exceptional cutting characteristics and longevity. It incorporates a chamfered cutting edge and a substantial surface hardening layer, resulting from a thorough surface treatment process. This innovation aims to enhance the efficiency and durability of cutting tools in industrial settings.
Career Highlights
Throughout his career, Yoshiro Ishii has held pivotal roles in several respected companies, notably the Sumitomo Metal Mining Company and the Research Institute for Metal Surface of High Performance. His experiences at these institutions have significantly contributed to his expertise and the formulation of his patents.
Collaborations
Ishii has collaborated with several notable colleagues during his career. Among them are Yoshikazu Yaginuma and Shinichi Okabe. Their collective efforts have fostered an environment of innovation, allowing for the development of cutting-edge technologies in the materials realm.
Conclusion
Yoshiro Ishii’s contributions to the field of materials science and engineering illustrate the importance of innovation in driving advancements in industrial tools and substrates. His patents, especially in the area of copper polyimide substrates and steel cutting tools, signify a commitment to improving the performance and efficiency of critical materials. As he continues to pioneer new technologies, Ishii remains an influential figure in the realm of innovation.