Location History:
- Kumagaya, JA (1976)
- Kumagaya, JP (1979 - 1981)
- Saitama, JP (1989)
- Fukaya, JP (1989 - 1995)
Company Filing History:
Years Active: 1976-1995
Title: Masaaki Tokunaga: Innovator in Permanent Magnet Technology
Introduction
Masaaki Tokunaga, based in Fukaya, Japan, is a prolific inventor known for his groundbreaking contributions to the field of permanent magnet technology. With a remarkable portfolio comprising 20 patents, Tokunaga has specialized in the development of high-performance magnets that are crucial for various industrial applications.
Latest Patents
Among Tokunaga's latest innovations is the Nd-Fe-B system permanent magnet, which boasts a coercive force (iHc) of 12 KOe or more and an impressive maximum energy product (BH)max of 42 MGOe or more. This advanced permanent magnet consists of 28 to 32 wt. % of Neodymium (Nd) and Dysprosium (Dy)—with Dy ranging from 0.4 to 3 wt. %—and includes minimal amounts of Cobalt (Co), Aluminum (Al), Boron (B), as well as other elements like Niobium (Nb) and Vanadium (V). Another significant patent is the magnetically anisotropic R-T-B magnet, which involves a sophisticated production process leading to crystal grains with aspect ratios of 2 or more. These innovations demonstrate Tokunaga's expertise in enhancing the performance and efficiency of permanent magnets.
Career Highlights
Tokunaga's career includes significant tenures at esteemed companies such as Hitachi Metals, Ltd. and 501 Hitachi Metals, Ltd. His technical prowess and innovative mindset have been instrumental in advancements within the magnet industry. His patents reflect his dedication to creating high-quality materials that push the boundaries of current technology.
Collaborations
Throughout his career, Tokunaga has collaborated with notable professionals in the field, including Shigeho Tanigawa and Katsunori Iwasaki. These partnerships have undoubtedly contributed to his success, fostering the exchange of ideas and enhancing the quality of his inventions.
Conclusion
Masaaki Tokunaga's contributions to the field of permanent magnet technology stand as a testament to his ingenuity and commitment to innovation. Through his extensive patent portfolio and collaborations, he continues to influence the industry, paving the way for future advancements in magnetic materials. As technology evolves, Tokunaga’s work will likely remain at the forefront of magnet research and application.
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.