Location History:
- Yamaguchi, JP (1990 - 2001)
- Shimonoseki, JP (1998 - 2007)
Company Filing History:
8 out of 1,379 
3 out of 1,786 
1 out of 3 Years Active: 1990-2007
Title: Isao Harada: Innovator in Aluminum Nitride Technology
Introduction
Isao Harada is a prominent inventor based in Yamaguchi, Japan. He has made significant contributions to the field of materials science, particularly in the development of aluminum nitride powders. With a total of 11 patents to his name, Harada's work has had a substantial impact on various industrial applications.
Latest Patents
One of Harada's latest patents focuses on the production of aluminum nitride powder, which is designed to be sintered at temperatures not exceeding 1600°C. This innovation results in a high-density and thermally conductive sintered aluminum nitride, making it suitable for use as a substrate material. The process involves a vapor phase reaction apparatus where ammonia gas and nitrogen gas containing an organic aluminum compound are utilized to produce the aluminum nitride powder. The powder undergoes heat treatment in a reducing or inert gas atmosphere, followed by mechanical treatment to achieve specific surface area and particle size characteristics.
Another notable patent addresses the processing method for high-pressure gas containers filled with halogen-containing gases. This invention improves the inner surface processing of metal containers to minimize purity decline due to water content and impurities. The method ensures that the ratio of specific peaks in the X-ray photoelectron spectrum remains at or below 0.3, enhancing the container's performance.
Career Highlights
Throughout his career, Isao Harada has worked with notable companies such as Mitsui Toatsu Chemicals and Mitsui Chemicals. His experience in these organizations has allowed him to refine his expertise in materials science and patent development.
Collaborations
Harada has collaborated with esteemed colleagues, including Naruyuki Iwanaga and Toshihiko Nishitsuji. These partnerships have contributed to the advancement of his research and innovations in the field.
Conclusion
Isao Harada's contributions to the development of aluminum nitride technology and high-pressure gas containers highlight his role as a significant inventor in materials science. His innovative patents continue to influence various industrial applications, showcasing the importance of his work in advancing technology.
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.