Kishiwada, Japan

Hajime Murakami

This inventor holds 4 USPTO granted patents, plus 1 CIPO patent. Top assignees: Matsushita Electric Industrial Co., Ltd., Mitsui Minings & Melting Co., Ltd., Matsushita Electric Corp., Ltd.. Active years: 1997-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Murakami. Retrieved from https://idiyas.com/inventor/hajime-murakami-8y3whuh7

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

Calculating rank

% Patents Active = 75.0


Average Co-Inventor Count = 4.5

ph-index = 2

Forward Citations = 5(Granted Patents)


Location History:

  • Fujisawa, JP (1998)
  • Kadoma, JP (1999)
  • Kishiwada, JP (1997 - 2008)

Company Filing History:


Years Active: 1997-2008

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4 patents (USPTO):Explore Patents

Title: Hajime Murakami: Innovator in Battery Technology

Introduction

Hajime Murakami is a notable inventor based in Kishiwada, Japan. He has made significant contributions to the field of battery technology, holding a total of four patents. His work focuses on enhancing the performance and efficiency of manganese dry batteries.

Latest Patents

One of Murakami's latest patents is for a positive electrode current collector and manganese dry battery utilizing this technology. The positive electrode current collector comprises a carbon rod, which is impregnated with either paraffin wax or microcrystalline wax. This innovation ensures that the manganese dry battery maintains its sealing performance during high-temperature storage, even when using a low-density carbon rod. Another significant patent involves electrolytic manganese dioxide, which has a specific composition and moisture content. This invention also details a process for preparing the manganese dioxide and describes a manganese dry cell that incorporates this material.

Career Highlights

Throughout his career, Hajime Murakami has worked with prominent companies such as Mitsui Mining & Smelting Company, Ltd. and Matsushita Electric Industrial Co., Ltd. His experience in these organizations has contributed to his expertise in battery technology and materials science.

Collaborations

Murakami has collaborated with notable coworkers, including Ryohei Ashihara and Kohei Kubota. Their combined efforts have further advanced the innovations in battery technology.

Conclusion

Hajime Murakami's contributions to battery technology through his patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence the development of efficient energy storage 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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