Location History:
- Tokyo, JP (2008 - 2016)
- Chuo-ku, JP (2014 - 2016)
Company Filing History:
7 out of 7,968 
2 out of 577 
1 out of 5 Years Active: 2008-2025
Title: Junichi Nagaoka: Innovator in Ferrite Magnetic Materials
Introduction:
Junichi Nagaoka is a Tokyo-based inventor and scientist recognized for his contributions to the field of ferrite magnetic materials. With a strong background in materials science and engineering, Nagaoka has dedicated his career to developing high-performance permanent magnets with enhanced magnetic properties. Through his extensive research and numerous patents, Nagaoka has made significant strides in the field of magnetics.
Latest Patents:
Nagaoka's recent patents focus on the development of ferrite magnetic materials with improved magnetic properties. Two notable patent filings are highlighted below:
1. Ferrite Magnetic Material: This patent aims to provide a ferrite magnetic material capable of retaining high magnetic flux density (Br) and coercivity (HcJ) while possessing high coercivity squareness ratio (Hk/HcJ). The preferred embodiment of this material is a hard ferrite formed by including a minimum of 0.001% by mass of phosphorus (P).
2. Ferrite Magnetic Material with Hexagonal Structure: This invention seeks to create a ferrite magnetic material with a hexagonal structure, capable of maintaining high values of Br and HcJ while achieving a high coercivity squareness ratio (Hk/HcJ). The main composition consists of CaRSrBaFeMO, where R represents rare earth elements, M denotes transition metal elements, and the specific compositional ranges are defined in the patent.
Career Highlights:
Throughout his career, Nagaoka has worked with renowned companies in the industry, including TDK Corporation and Tomy Company, Ltd. These companies are recognized for their advancements in various technological sectors, making Nagaoka's involvement a testament to his expertise and commitment to innovation.
Collaborations:
Nagaoka has collaborated with notable individuals in the field, including Yoshihiko Minachi and Takahiro Mori. These collaborations have resulted in significant advancements and the sharing of knowledge within the realm of ferrite magnetic materials.
Conclusion:
Junichi Nagaoka's continuous dedication to the development of ferrite magnetic materials has made a substantial impact in the field of magnetics. His innovative patents, exemplary career highlights, and collaborations demonstrate his expertise and commitment to pushing the boundaries of magnetic technology. Nagaoka's contributions are crucial in shaping the future of permanent magnet materials and their varied applications, further solidifying his position as a prominent figure in the world of innovations and patents.