Location History:
- Hitachi, JA (1977)
- Hitachi, JP (1986)
Company Filing History:
Years Active: 1977-1986
Title: Norihiko Sagawa: Innovator in Sodium-Sulfur Battery Technology
Introduction
Norihiko Sagawa is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of power storage systems, particularly through his work with sodium-sulfur batteries. With a total of 2 patents, Sagawa's innovations are paving the way for safer and more efficient energy storage solutions.
Latest Patents
Sagawa's latest patents include a power storage system using sodium-sulfur batteries. This innovative battery design features molten sodium as an active material for the negative pole and molten sulfur for the positive pole. The two materials are separated by a sodium ion-permeating solid electrolyte, such as β-alumina. The system includes a sodium storage tank that communicates with the molten sodium in the battery cell, allowing for the withdrawal of molten sodium when necessary. Additionally, a circulating mechanism purifies and returns the sodium to the battery cell, enhancing safety during emergencies. His second patent focuses on a method for disassembling and repairing sodium-handling apparatuses, which involves solidifying deposited sodium and forming a neutral salt film on the surfaces to facilitate safe repairs.
Career Highlights
Sagawa is associated with Hitachi, Ltd., a leading company in technology and innovation. His work has been instrumental in advancing the safety and efficiency of sodium-sulfur battery systems. His contributions have not only improved the technology but also enhanced the overall economic viability of these power storage solutions.
Collaborations
Throughout his career, Sagawa has collaborated with notable colleagues, including Tadashi Gotou and Fumio Kawamura. These partnerships have fostered a collaborative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Norihiko Sagawa's work in sodium-sulfur battery technology exemplifies the importance of innovation in energy storage solutions. His patents reflect a commitment to safety and efficiency, making significant strides in the field. Sagawa's contributions will undoubtedly influence the future of power storage systems.