Location History:
- Toyota, JP (1983)
- Aichi, JP (1987 - 1988)
- Anjyo, JP (2011)
- Anjo, JP (2013)
Company Filing History:
2 out of 36,499 
2 out of 2,064 
1 out of 1,838 Years Active: 1983-2013
Title: Hisao Shirai: Innovator in Steel Component Technology
Introduction
Hisao Shirai is a notable inventor based in Aichi, Japan, recognized for his contributions to the field of steel component technology. With a total of five patents to his name, Shirai has made significant advancements in the manufacturing and heat treatment of steel components.
Latest Patents
One of Hisao Shirai's latest patents is for a carburized and induction-hardened component. This innovation involves a steel component formed by carburizing and then induction-hardening a steel composition that includes specific percentages of carbon, silicon, manganese, phosphorus, sulfur, nickel, chromium, molybdenum, oxygen, and nitrogen. The resulting component boasts a surface hardness of at least 55 HRC, while the core portion maintains a hardness range of 20 to 50 HRC without a martensite structure. Another significant patent involves a heat treatment method for steel components, which includes carburizing a steel member in a reduced pressure environment, followed by cooling and quenching processes.
Career Highlights
Hisao Shirai has had a distinguished career, working with prominent companies such as Toyota Motor Corporation and Aisin Aw Co., Ltd. His experience in these organizations has allowed him to refine his expertise in steel technology and contribute to innovative solutions in the automotive industry.
Collaborations
Throughout his career, Shirai has collaborated with notable colleagues, including Takuo Sibata and Takao Taniguchi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in steel components.
Conclusion
Hisao Shirai's work in steel component technology exemplifies the impact of innovation in manufacturing processes. His patents reflect a commitment to advancing the field and improving the performance of steel components in various applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.