Kagawa, Japan

Kazuo Niwa

This inventor holds 9 USPTO granted patents. Top assignees: Mitsubishi Chemical Corporation, Mitsubishi Kasei Corporation, Mitsubishi Jukogyo Kabushiki Kaisha. Active years: 1995-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Niwa. Retrieved from https://idiyas.com/inventor/kazuo-niwa

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 = 4.5

ph-index = 6

Forward Citations = 129(Granted Patents)


Location History:

  • Sakaide, JP (1995 - 1996)
  • Kagawa-ken, JP (1996)
  • Kagawa, JP (1995 - 2000)

Company Filing History:


Years Active: 1995-2000

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9 patents (USPTO):Explore Patents

Title: The Innovations of Kazuo Niwa: A Pioneer in Lithium Secondary Cell Technology

Introduction

Kazuo Niwa, a notable inventor based in Kagawa, Japan, has made significant contributions to the field of lithium secondary cell technology. With a remarkable portfolio of 9 patents, Niwa's work primarily focuses on improving battery performance and longevity through innovative materials and methods.

Latest Patents

Among his latest patents, Niwa has introduced several novel approaches to lithium secondary cells. One such invention describes a lithium secondary cell that utilizes a carbon material treated with a fluorinating agent, which contains virtually no C--F covalent bonds. This innovative design enhances the cell's life, providing a more efficient and durable energy solution. Furthermore, he has developed a method in which the carbon material has a fluorine extractable amount of no more than 0.05 wt % when treated with an aqueous alkaline solution, ensuring that the secondary cell does not experience casing expansion during charging, an issue often caused by residual fluorine. These advancements mark important milestones in battery technology, showcasing Niwa's expertise and creativity.

Career Highlights

Niwa has had a successful career, having worked with reputable companies in the chemical industry, including Mitsubishi Chemical Corporation and Mitsubishi Kasei Corporation. His experience at these organizations allowed him to refine his skills and develop groundbreaking technologies that address the needs of modern battery applications.

Collaborations

Collaboration has been a vital aspect of Niwa's work. He has had the privilege of working alongside esteemed colleagues such as Kohei Okuyama and Toshihiro Fukagawa. These partnerships have undoubtedly enriched his projects, leading to innovative solutions and expanded research in the field of lithium ion technology.

Conclusion

Kazuo Niwa stands out as a leading inventor in the realm of lithium secondary cells. His commitment to enhancing battery performance and addressing critical technical challenges, coupled with his collaborations and industry experience, position him as a significant figure in energy innovation. With his ongoing research and development efforts, Niwa is likely to continue shaping the future of battery technology.

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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