Location History:
- Hyogo-ken, JP (1998)
- Himeji, JP (2006 - 2011)
Company Filing History:
4 out of 68 
1 out of 2,433 
Years Active: 1998-2011
Title: Ryoji Hayashi: Innovator in Magnetic Materials
Introduction
Ryoji Hayashi is a notable inventor based in Himeji, Japan. He has made significant contributions to the field of magnetic materials, holding a total of 4 patents. His work focuses on developing target materials that enhance sputtering efficiency and magnetic properties.
Latest Patents
One of Hayashi's latest patents is a (CoFe)Zr/Nb/Ta/Hf based target material. This innovative material is designed to achieve high sputtering efficiency and effect by increasing the leakage magnetic flux in magnetron sputtering. The target material consists of an Fe-Co based alloy with at least 80 atomic % of Fe and Co, maintaining an Fe:Co atomic ratio of 80:20 to 0:100. Additionally, it incorporates less than 20 atomic % of elements such as Zr, Hf, Nb, and Ta in solid solution form. Another significant patent is for a soft magnetic FeCo based target material, which boasts high saturation magnetic flux density and excellent atmospheric corrosion resistance. This material is composed of an FeCo based alloy that may include up to 30 atomic % of various metal elements, with the balance being Fe and Co.
Career Highlights
Throughout his career, Ryoji Hayashi has worked with prominent companies, including Sanyo Special Steel Co., Ltd. and NSK Corporation. His experience in these organizations has contributed to his expertise in the development of advanced materials.
Collaborations
Hayashi has collaborated with notable coworkers such as Akihiko Yanagitani and Yoshikazu Aikawa. Their joint efforts have furthered the research and development of innovative magnetic materials.
Conclusion
Ryoji Hayashi's contributions to the field of magnetic materials through his patents and collaborations highlight his role as a significant inventor. His work continues to influence advancements in sputtering technology and material science.