Shigenobu Tajima

Title: Shigenobu Tajima: Innovator in Hydrogen Storage and Rare Earth Oxides

Introduction

Shigenobu Tajima is a prominent inventor based in Kiyose, Japan. He has made significant contributions to the field of materials science, particularly in the development of alloys suitable for hydrogen storage and methods for producing rare earth oxides. With a total of 5 patents to his name, Tajima's work has implications for energy storage and advanced materials.

Latest Patents

Tajima's latest patents include innovative technologies that enhance hydrogen storage capabilities. One of his notable inventions is a hydrogen storage alloy that contains carbon in a proportion of 30 to 500 ppm. This alloy is represented by the stoichiometric formula A.sub.x B.sub.5.0, where A is La or a mixture of La with at least one rare earth metal other than La. B consists of metals selected from a group including Al, Co, Cr, Cu, Fe, Mn, Ni, Ti, V, Zn, and Zr. The alloy features a unique texture where only the intermetallic compound phase named AB.sub.5 phase is present, while all other intermetallic compound phases are absent. Additionally, he has developed a method for manufacturing spherical grains of rare earth oxides, which involves granulating a rare earth oxide powder to create voidless spherical grains with a mean diameter of 20-300 µm.

Career Highlights

Shigenobu Tajima is currently associated with Shin-Etsu Chemical Co., Ltd., where he continues to push the boundaries of material innovation. His work has been instrumental in advancing technologies that are crucial for energy applications and materials engineering.

Collaborations

Tajima has collaborated with notable colleagues in his field, including Masatoshi Ishii and Yuji Kimura. Their combined expertise has contributed to the successful development of innovative materials and processes.

Conclusion

Shigenobu Tajima's contributions to the fields of hydrogen storage and rare earth oxides highlight his role as a leading inventor in materials science. His patents reflect a commitment to advancing technology for sustainable energy solutions.