Yokohama, Japan

Seijirou Yajima

This inventor holds 2 USPTO granted patents. Top assignees: Nissan Motor Company Limited, Toyo Seikan Kaisha, Ltd.. Active years: 2011-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seijirou Yajima. Retrieved from https://idiyas.com/inventor/seijirou-yajima

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Location History:

  • Kanagawa, JP (2011)
  • Yokohama, JP (2014)

Company Filing History:


Years Active: 2011-2014

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2 patents (USPTO):Explore Patents

Title: The Innovative Mind of Seijirou Yajima: Pioneering Battery Solutions

Introduction: Seijirou Yajima, an esteemed inventor based in Yokohama, Japan, has significantly contributed to the field of battery technology. With a total of two patents to his name, Yajima has focused on developing innovative methods for assembling battery outer cases that enhance efficiency and functionality.

Latest Patents: Yajima's latest patents encompass advanced techniques for assembling battery outer cases aimed at housing flat battery packs. The first patent details an innovative assembly method that involves molding a metal container main body with notched holes designed to expose the terminals of a flat battery pack. This method includes steps such as fitting the terminals into the notched holes, covering the main body with a metal lid, and joining the components through a double seaming technique. His second patent introduces a design for a battery outer case that maximizes space efficiency by minimizing the protrusion of joints between the metal container main body and the metal lid. This design not only responds to thermal influences but also eliminates the need for additional components, such as gaskets. The construction of the case ensures adequate air permeability while securely joining the open edges.

Career Highlights: Seijirou Yajima's career has seen him collaborate with prominent companies such as Nissan Motor Company Limited and Toyo Seikan Kaisha, Ltd. His extensive experience in these organizations has played a significant role in refining his innovative approaches to battery design and assembly.

Collaborations: Throughout his career, Yajima has worked alongside notable colleagues such as Ryuichi Amagai and Etsuo Oogami. Their collaboration has likely contributed to the innovative momentum of his projects, allowing for shared knowledge and expertise in battery technologies.

Conclusion: Seijirou Yajima stands out as an influential inventor in battery technology, with patents that reflect a commitment to advancing efficient design and assembly methods. Through his work, Yajima has not only improved the functionality of battery outer cases, but he has also made notable contributions that impact various industries relying on battery technology. His innovative spirit continues to inspire advancements that will shape the future of energy solutions.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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