Location History:
- Kyoto, JP (1985)
- Ikoma, JP (1987 - 2008)
- Nara, JP (2002 - 2012)
- Shizuoka, JP (2013)
Company Filing History:
28 out of 27,375 
8 out of 16,453 
1 out of 3,562 Years Active: 1985-2013
Title: Innovative Contributions of Fumitoshi Yamashita in Magnet Technology
Introduction
Fumitoshi Yamashita, an accomplished inventor based in Nara, Japan, holds an impressive portfolio of 36 patents. His innovative work primarily focuses on the development of advanced magnet technologies, particularly in the field of rare earth and anisotropic magnets. His contributions have significant implications for various applications, enhancing efficiency and functionality in modern technologies.
Latest Patents
Among his most notable patents is the manufacturing method of rare earth-iron ring magnets with continuous orientation controlled anisotropy. This method involves a process of manufacturing segments with an anisotropic direction that is consistently varied in a vertical plane through a controlled magnetic field. The process includes arranging the segments circumferentially, extruding them into ring shapes, and compressing them effectively. These innovations result in a ring magnet whose anisotropy is maintained in a consistent direction, achieving a maximum energy density of 160 to 180 kJ/m.
Another significant patent includes a radial anisotropic magnet manufacturing method and an iron core-equipped permanent magnet motor using this innovative magnet. This method enhances the tranquility and controllability of iron core-equipped permanent magnet motors by improving the compatibility of the magnet's shape. Notably, it allows for controlling the C-axis angle with respect to the tangential direction to reduce cogging torque without having to separate the magnetic pole into segments.
Career Highlights
Fumitoshi Yamashita has had a notable career working with prestigious companies, including Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His experiences with these leading corporations have undoubtedly shaped his expertise and contributions to magnet technology, allowing him to pioneer new manufacturing techniques and applications.
Collaborations
Throughout his career, Yamashita has collaborated with talented individuals such as Masami Wada and Yoshikazu Yamagata. These partnerships have enabled a synergistic approach to problem-solving and innovation, leading to the development of cutting-edge technologies in the field of permanent magnets.
Conclusion
Fumitoshi Yamashita's innovative patents and his dedication to advancing magnet technology have made a profound impact on the industry. His work not only enhances the performance of various devices but also sets a benchmark for future research and development in magnetic materials and applications. Through continued collaboration and innovation, Yamashita's contributions are poised to shape the future of magnet technology significantly.