Location History:
- Kanagawa, JP (2004)
- Yokohama, JP (2002 - 2019)
Company Filing History:
8 out of 1,233 
1 out of 832,880 Years Active: 2002-2019
Title: Tohru Shiraishi: Innovator in Spring and Titanium Alloy Technologies
Introduction
Tohru Shiraishi is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the fields of mechanical engineering and materials science, holding a total of nine patents. His work focuses on enhancing the durability and performance of various mechanical components.
Latest Patents
One of Shiraishi's latest patents is for a compression coil spring and method for producing the same. This invention provides a compression coil spring with high durability, utilizing an inexpensive wire material. The spring is formed from a steel wire material with specific compositions, ensuring optimal hardness and residual stress characteristics. Another notable patent involves a high-strength titanium alloy member with superior fatigue resistance. The production method includes nitriding a titanium alloy raw material to enhance its properties, followed by sintering and surface treatment to achieve desired performance metrics.
Career Highlights
Throughout his career, Tohru Shiraishi has worked with notable companies, including NHK Spring Co., Ltd. His experience in the industry has allowed him to develop innovative solutions that address the needs of modern engineering applications.
Collaborations
Shiraishi has collaborated with talented individuals such as Yoshiki Ono and Yuji Araoka, contributing to the advancement of technology in his field.
Conclusion
Tohru Shiraishi's innovative work in the development of compression coil springs and titanium alloy members showcases his expertise and commitment to engineering excellence. His contributions continue to influence the industry and inspire future innovations.