Location History:
- Ikoma, JP (1996)
- Osaka, JP (2001)
Company Filing History:
3 out of 240 
2 out of 929 Years Active: 1996-2001
Title: The Innovative Contributions of Yoshihisa Kishimoto
Introduction
Yoshihisa Kishimoto is a notable inventor based in Ikoma, Japan. He has made significant contributions to the field of rare-earth magnets, holding a total of 3 patents. His work focuses on enhancing the properties and production methods of rare-earth system sintered magnets.
Latest Patents
Kishimoto's latest patents include a method for preparing rare-earth system sintered magnets. The objective of this invention is to provide magnets with excellent magnetic properties, unique configurations, small sizes, thin wall thicknesses, and intricate geometries. This method allows for easy granulation of alloy powders and suppresses chemical reactions between rare-earth systems and binder substances. As a result, the residual oxygen and carbon levels in the sintered products are reduced. Additionally, the production method improves flowability and lubricant capability during the forming process, enhancing dimension accuracy and productivity. Another patent involves a powder mixture for producing rare-earth iron sintered magnets, which includes a fine R-Fe-B alloy powder and a boric acid ester compound as a lubricant. This innovation allows for continuous compression molding without the need for mold lubrication, resulting in magnets with improved magnetic properties.
Career Highlights
Kishimoto has worked with prominent companies such as Sumitomo Special Metals Co., Ltd. and Sumitomo Metal Industries, Inc. His experience in these organizations has contributed to his expertise in the field of magnet technology.
Collaborations
Throughout his career, Kishimoto has collaborated with notable individuals, including Wataru Takahashi and Nobushige Hiraishi. These collaborations have further enriched his work and innovations in the field.
Conclusion
Yoshihisa Kishimoto's contributions to the development of rare-earth magnets and his innovative production methods have significantly impacted the industry. His patents reflect a commitment to advancing technology and improving the performance of magnetic materials.