Tamotsu Ogawa

Title: The Innovative Contributions of Tamotsu Ogawa

Introduction

Tamotsu Ogawa is a notable inventor based in Omiya, Japan. He has made significant contributions to the field of rare earth alloy magnet technology. With a total of 7 patents to his name, Ogawa's work has had a profound impact on the industry.

Latest Patents

One of his latest patents is a method for producing rare earth alloy magnet powder. This invention provides a method that exhibits stable and superior magnetic properties using hydrogenation followed by dehydrogenation. The process involves subjecting a homogenized rare earth alloy magnet alloy material to hydrogenation at temperatures between 750°C and 950°C, followed by dehydrogenation at the same temperature range. Both processes are carried out in a vacuum tube furnace, ensuring that the alloy material maintains a temperature drop of at most 50°C during dehydrogenation due to an endothermic reaction. Another significant patent involves the anisotropic rare earth-Fe-B and rare earth-Fe-Co-B system magnets. This patent describes a hot press molded body or an HIP molded body with specific compositions that include rare earth elements, boron, and iron, among others.

Career Highlights

Throughout his career, Tamotsu Ogawa has worked with prominent companies such as Mitsubishi Materials Corporation and Mitsubishi Kinzoku Kabushiki Kaisha. His experience in these organizations has allowed him to develop and refine his innovative ideas in magnet technology.

Collaborations

Ogawa has collaborated with notable coworkers, including Takuo Takeshita and Ryoji Nakayama. Their combined expertise has contributed to the advancement of rare earth magnet technologies.

Conclusion

Tamotsu Ogawa's contributions to the field of rare earth alloy magnets are invaluable. His innovative patents and collaborations have significantly advanced the technology, making him a prominent figure in the industry.