Company Filing History:
6 out of 2,333 
1 out of 3,252 Years Active: 1978-1996
Title: Innovations of Toshio Okuno
Introduction
Toshio Okuno is a notable inventor based in Yasugi, Japan. He has made significant contributions to the field of materials science, particularly in the development of high-strength stainless steels and materials for apparatuses using alcoholic fuels. With a total of 6 patents to his name, Okuno's work has had a considerable impact on various industries.
Latest Patents
One of Okuno's latest patents focuses on high-strength stainless steel designed for use in fuel injection systems of internal combustion engines. This innovative material is an as-annealed martensitic stainless steel that achieves a hardness of not less than HRC 58 after quenching and tempering heat treatment. The patent specifies that the limit swaging ratio of this stainless steel is not less than 75%, ensuring its durability and performance. Additionally, the chemical composition of this stainless steel includes specific percentages of carbon, chromium, and other elements, making it suitable for high-performance applications.
Another significant patent involves materials and members for apparatuses that utilize alcoholic fuels. This invention provides a material that excels in peel resistance, corrosion resistance, and abrasion resistance against alcoholic fuels. The material is based on Fe-Cr-C or Fe-Cr-C-Cu steel, with specific content ranges for chromium and carbon to optimize its performance in both impact and non-impact applications.
Career Highlights
Throughout his career, Toshio Okuno has worked with prominent companies such as Hitachi Metals, Ltd. and Nippondenso Co., Ltd. His experience in these organizations has allowed him to refine his expertise in materials engineering and contribute to various innovative projects.
Collaborations
Okuno has collaborated with notable coworkers, including Katsuaki Fukushima and Masakazu Ito. Their combined efforts have led to advancements in materials technology and have furthered the development of high-performance materials.
Conclusion
Toshio Okuno's contributions to materials science, particularly in the development of high-strength stainless steels and materials for alcoholic fuel applications, highlight his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to advancing technology and improving industrial applications.