This inventor holds 28 USPTO granted patents and 1 published patent application and 4 EPO patents, primarily in Battery Technology. Top assignees: Hitachi, Ltd., Toyota Jidosha Kabushiki Kaisha, The University of Texas System. Active years: 2004-2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Nissin, JP (2010)
- Hitachinaka, JP (2004 - 2011)
- Nisshin, JP (2010 - 2022)
Company Filing History:
15 out of 42,731 
12 out of 38,912 
3 out of 5,637 
Years Active: 2004-2025
Areas of Expertise:
Title: The Innovative Contributions of Hisataka Fujimaki
Introduction
Hisataka Fujimaki, a prominent inventor based in Hitachinaka, Japan, has made significant strides in the field of battery technology. With a remarkable portfolio of 27 patents, Fujimaki stands out for his contributions to innovations that enhance the efficiency and performance of batteries.
Latest Patents
Among his latest innovations is a stacked battery design aimed at reducing the unevenness of short circuit resistance across multiple cells. This stacked battery features several cells aligned in a thickness direction, electrically connected in parallel. Each cell is meticulously designed with a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector in a specific order. A notable aspect of this patent is the distinction between the surface-side cell and the center-side cell. The research addresses the varying contact resistance between these components, ensuring improved performance and reliability in the stacked battery structure.
Career Highlights
Fujimaki has had a distinguished career, with notable tenure at recognized companies such as Hitachi, Ltd. and Toyota Motor Corporation. His work in these organizations has fueled advancements in battery technology, showcasing his expertise in engineering and innovation.
Collaborations
Throughout his career, Fujimaki has collaborated with talented professionals including Masaki Yanagisawa and Hiroshi Akiyama. These partnerships have not only enhanced his work but have also led to groundbreaking developments in the field of energy storage solutions.
Conclusion
Hisataka Fujimaki's contributions to the world of battery technology exemplify the impact of dedicated inventors on modern innovations. With his extensive patent portfolio and collaborative spirit, Fujimaki continues to influence the development of more efficient and reliable energy storage systems, paving the way for future advancements in the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile