Location History:
- Kyoto, JP (1996 - 2003)
- Ibaragi-ken, JP (2004 - 2006)
- Ibaraki, JP (2010 - 2012)
- Tsukuba, JP (2005 - 2014)
Company Filing History:
7 out of 3,083 
5 out of 552 
4 out of 25,577 
Years Active: 1996-2014
Title: Innovations of Yasuo Koide: Pioneering the Use of Single-Crystal Diamond
Introduction: Yasuo Koide, a distinguished inventor based in Tsukuba, Japan, has made significant contributions to the field of materials science, particularly in the development and application of single-crystal diamond technologies. With a remarkable portfolio that includes 16 patents, Koide's inventions have paved the way for advancements in nano and micro-electromechanical systems (N/MEMS) devices.
Latest Patents: Among Koide’s latest patents is a groundbreaking method for producing single-crystal diamond movable structures. This innovative approach overcomes the challenges associated with utilizing single crystal diamond in N/MEMS devices, which have historically faced issues in mechanical performance and stability. Koide's process utilizes high concentration ion-implanted regions modified into graphite, allowing for the effective removal of the graphite layer through electrochemical etching. This method enhances the mechanical performance and electrical properties of the resulting cantilever structure, exhibiting high frequency resonance.
Another significant contribution is Koide's patent for a diamond UV-sensor element and its manufacturing method. This invention improves the UV/visible light blind ratio using a diamond single crystal as the light-receiving component, which detects light based on changes in electric resistance. The manufacturing process includes hydrogenating the diamond surface and exposing it to ozone or active oxygen, showcasing Koide's innovative approach in enhancing sensor technology.
Career Highlights: Koide has had an impressive career, working with notable organizations including Toyoda Gosei Co., Ltd. and the National Institute for Materials Science. His tenure at these institutions has significantly influenced his research and patent development, leading to advancements in diamond material applications.
Collaborations: Throughout his career, Koide has collaborated with esteemed colleagues such as Masanori Murakami and Naoki Shibata. These collaborations have not only augmented his research capabilities but have also fostered a culture of innovation in the field of materials science.
Conclusion: Yasuo Koide's contributions to the field of single-crystal diamond technology exemplify the spirit of innovation. His patents reflect a profound understanding of material properties and their applications, providing a foundation for future advancements in N/MEMS devices and sensor technology. As the landscape of technology continues to evolve, Koide's work will undoubtedly remain influential in the development of new materials and systems.