Location History:
- Otsu, JP (1995)
- Ootsu, JP (1998)
- Hyogo, JP (2001 - 2006)
Company Filing History:
6 out of 240 
2 out of 85 
1 out of 832,843 Years Active: 1995-2006
Title: Koki Tokuhara: Innovator in Rare Earth Magnet Technology
Introduction
Koki Tokuhara is a prominent inventor based in Hyogo, Japan, known for his significant contributions to the field of rare earth magnet technology. With a total of 9 patents to his name, Tokuhara has developed innovative methods that enhance the production and properties of rare earth magnets.
Latest Patents
One of Tokuhara's latest patents is a method of making a sintered compact for rare earth magnets. This method involves several steps, including preparing a first coarse powder by coarsely pulverizing a rare earth alloy sintered body through a hydrogen pulverization process. Following this, a first fine powder is created by finely pulverizing the coarse powder, and a second fine powder is prepared by pulverizing an alloy block of a rare earth alloy material. The final step involves sintering a mixed powder that includes both fine powders, which are designed to improve the magnetic properties of the resulting rare earth magnet.
Another notable patent is a powder compacting apparatus and method for producing a rare-earth magnet. This invention aims to prevent the heating and ignition of rare-earth alloy powder while reducing its oxygen content, thereby enhancing the magnetic properties of the magnet. The apparatus includes an airtight container for storing the powder, an airtight feeder box, and a powder supply device that ensures the powder remains free from atmospheric exposure during the process.
Career Highlights
Throughout his career, Koki Tokuhara has worked with several notable companies, including Sumitomo Special Metals Co., Ltd. and Neomax Co., Ltd. His work in these organizations has allowed him to refine his expertise in rare earth materials and their applications in various technologies.
Collaborations
Tokuhara has collaborated with esteemed colleagues such as Akiyasu Oota and Hitoshi Morimoto. These partnerships have contributed to the advancement of research and development in the field of rare earth magnets.
Conclusion
Koki Tokuhara's innovative work in rare earth magnet technology has made a significant impact on the industry. His patents reflect a deep understanding of material science and engineering, positioning him as a key figure in the advancement of magnet technology.