This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: Dowa Electronics Materials Co., Ltd., Dowa Electronics Materials., Ltd., Fujifilm Corporation. Active years: 2025-2026.
Company Filing History:
1 out of 315 
1 out of 11 
1 out of 16,893 
Years Active: 2025-2026
Title: The Innovations of Masaki Koshiko
Introduction
Masaki Koshiko is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic materials, particularly through his innovative work on hexagonal ferrite magnetic powder. His inventions have the potential to enhance the performance of magnetic recording media.
Latest Patents
Koshiko holds a patent for a hexagonal ferrite magnetic powder and the method for producing it. This innovative material is designed to improve both the recording density and the signal-to-noise ratio (SNR) of magnetic recording media. The hexagonal ferrite magnetic powder contains bismuth (Bi) at a Bi/Fe molar ratio of 0.035 or less, with a saturation magnetization of 42.0 Am/kg or more. The production method involves immersing the hexagonal ferrite magnetic powder in a solution containing a compound that forms a complex with Bi, allowing for the elution of some Bi into the solution.
Career Highlights
Masaki Koshiko is associated with Dowa Electronics Materials Co., Ltd., where he continues to develop advanced materials for various applications. His work has been instrumental in pushing the boundaries of magnetic material technology.
Collaborations
Koshiko collaborates with fellow inventor Hirohisa Omoto, contributing to the advancement of their shared field of expertise.
Conclusion
Masaki Koshiko's innovative work in the development of hexagonal ferrite magnetic powder showcases his commitment to enhancing magnetic recording technologies. His contributions are paving the way for future advancements in this critical area of research.