Company Filing History:
Years Active: 1981-1982
Title: Kazuaki Onuki: Innovator in Magnetic Materials
Introduction
Kazuaki Onuki is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic materials, holding a total of 2 patents. His work focuses on the production and application of magnetic powders, which are essential in various technological advancements.
Latest Patents
Onuki's latest patents include a process for producing magnetic powder with high coercive force. This innovative method involves dispersing a magnetic iron oxide that contains silicon and phosphorus components in an aqueous solution of cobalt ions. By adding a base to create an alkaline condition and heat-treating the dispersion, the cobalt ions are adsorbed and diffused into the surface layer of the magnetic iron oxide. Additionally, a zinc component can be incorporated into the crystal structure, enhancing the material's properties.
Another notable patent is for a magnetic recording medium. This medium boasts a coercive force exceeding 550 Oersted and maintains a specific ratio of coercive force at different temperatures. The preparation involves incorporating a magnetic powder obtained by dispersing acicular gamma-Fe2O3 in a cobalt salt solution and reducing it with a reducing agent to deposit a cobalt compound on the acicular gamma-Fe2O3.
Career Highlights
Kazuaki Onuki is currently employed at TDK Electronics Company, Limited, where he continues to innovate in the field of magnetic materials. His expertise and dedication have positioned him as a key figure in the development of advanced magnetic technologies.
Collaborations
Throughout his career, Onuki has collaborated with notable colleagues, including Shinji Umeki and Toshihiro Hamabata. These partnerships have fostered a collaborative environment that enhances the innovation process.
Conclusion
Kazuaki Onuki's contributions to the field of magnetic materials through his patents and work at TDK Electronics Company, Limited, highlight his role as a leading inventor. His innovative approaches to producing high-performance magnetic powders and recording media continue to influence the industry.