Location History:
- Kariya, JP (1986 - 1987)
- Aichi, JP (1990)
Company Filing History:
3 out of 189 
1 out of 929 Years Active: 1986-1990
Title: The Innovations of Toshiyuki Hirao
Introduction
Toshiyuki Hirao is a notable inventor based in Kariya, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced metal nitride powders and refractory materials. With a total of 3 patents to his name, Hirao's work has implications for various industrial applications.
Latest Patents
One of Hirao's latest patents is a process for preparing metal nitride powder. This innovative method involves heating a mixture that primarily contains powder of a metal oxide or a metal hydroxide in a mixed gas of ammonia gas (NH₃) and a hydrocarbon gas (CmHn) at temperatures ranging from 1300°C to 1,600°C. The mixed gas has a specific ratio of ammonia to hydrocarbon gas, which is crucial for producing metal nitride powder with reduced amounts of oxygen and carbon. Another significant patent is related to a silicon aluminum oxynitride containing refractory material designed for use in continuous casting. This refractory is formed by sintering an admixture of silicon nitride (Si₃N₄), aluminum nitride (AlN), boron nitride (BN), and mineral clay, with the addition of aluminum oxide (Al₂O₃).
Career Highlights
Throughout his career, Toshiyuki Hirao has worked with prominent companies such as Toshiba Ceramics Co., Ltd. and Sumitomo Metal Industries, Inc. His experience in these organizations has allowed him to refine his expertise in materials development and innovation.
Collaborations
Hirao has collaborated with notable colleagues, including Isao Imai and Toshitsugu Ishii. These partnerships have contributed to the advancement of his research and the successful implementation of his inventions.
Conclusion
Toshiyuki Hirao's contributions to the field of materials science through his patents and collaborations highlight his innovative spirit and dedication to advancing technology. His work continues to influence various industrial applications, showcasing the importance of innovation in modern engineering.