Seiichirou Hirahara

Title: Innovations of Seiichirou Hirahara

Introduction

Seiichirou Hirahara is a notable inventor based in Kirishima, Japan. He has made significant contributions to the field of capacitors, particularly in the development of all-solid-state capacitors. With a total of 4 patents to his name, Hirahara's work has advanced the technology used in energy storage devices.

Latest Patents

Hirahara's latest patents include an all-solid-state capacitor with a solid electrolyte that features a polycrystalline structure. This innovative capacitor is designed to have a high capacitance, excellent frequency characteristics, and a compact form factor. The invention includes an inorganic solid electrolyte and a pair of current collectors that hold the electrolyte in between. The inorganic solid electrolyte is characterized by a main crystal phase of perovskite crystal structure, expressed by the general formula ABO. The A-site elements consist of two different elements, namely lithium (Li) and another element (M) from Group 2 of the Periodic Table. The B-site elements include titanium (Ti) and another element (M') from Group 5 of the Periodic Table.

Another patent focuses on the all-solid-state capacitor, which also includes an inorganic solid electrolyte and current collectors. In this design, the inorganic solid electrolyte has a polycrystalline structure made up of crystal particles and grain boundaries. Notably, in the first crystal particle, the domain near the grain boundaries is larger than the domain located at the center.

Career Highlights

Throughout his career, Seiichirou Hirahara has worked with prominent companies such as Kyocera Corporation and Energy Storage Materials LLC. His experience in these organizations has contributed to his expertise in capacitor technology and energy storage solutions.

Collaborations

Hirahara has collaborated with notable colleagues, including Youji Seki and Tomoyuki Ono. Their joint efforts have furthered advancements in the field of solid-state capacitors.

Conclusion

Seiichirou Hirahara's innovative work in the development of all-solid-state capacitors has made a significant impact on energy storage technology. His contributions continue to influence the industry and pave the way for future advancements.