Company Filing History:
3 out of 1,256 
1 out of 21 Years Active: 1981-1995
Title: Innovations of Junichi Shimomura
Introduction
Junichi Shimomura is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of materials science, particularly in the development of corrosion-resistant magnets. With a total of three patents to his name, Shimomura's work has had a considerable impact on the industry.
Latest Patents
Shimomura's latest patents include innovations in corrosion-resistant rare earth metal-transition metal series magnets. One of his inventions provides permanent magnets that excel not only in magnetic properties but also in corrosion resistance. This is achieved by utilizing two magnetically useful phases, namely the RE.sub.2 TM.sub.14 B phase, which has a high residual magnetic flux density, and a low melting point RE-TM' phase or RE-TM'-B phase. This combination enhances sinterability and possesses a cleaning action against grain boundaries of the RE.sub.2 TM.sub.14 B main phase. Another significant patent is for a corrosion-resistant rare earth metal-transition metal-boron permanent magnet. This magnet features improved corrosion resistance and excellent magnetic properties, with a composition that includes 10-25 at % rare earth elements, 2-20 at % boron, and the remainder being substantially iron, cobalt, and nickel. The magnet also has an average crystal grain size of 0.1-50 micrometers and includes a crystal grain boundary phase of RE(Ni.sub.1-x-y Co.sub.x Fe.sub.y) compound.
Career Highlights
Throughout his career, Junichi Shimomura has worked with prominent companies such as Kawasaki Steel Corporation and Nippon Kinzoku Co., Ltd. His experience in these organizations has allowed him to refine his expertise in materials science and magnet technology.
Collaborations
Shimomura has collaborated with notable coworkers, including Yukiko Ozaki and Michio Shimotomai. Their joint efforts have contributed to the advancement of innovative technologies in the field.
Conclusion
Junichi Shimomura's contributions to the development of corrosion-resistant magnets highlight his importance as an inventor in the materials science sector. His innovative patents and collaborations have paved the way for advancements in magnetic technology.
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