Hirakata, Japan

Koji Nishio

This inventor holds 108 USPTO granted patents, plus 13 CIPO patents, primarily in Alkaline Battery Technology (CPC class H01M4-58). Top assignees: Sanyo Electric Co., Ltd., Kyoto University, Mitsubishi Kasei Corporation. Active years: 1988-2015.


% Patents Active = 89.8


Average Co-Inventor Count = 5.3

ph-index = 18

Forward Citations = 1,006(Granted Patents)

Forward Citations (Not Self Cited) = 992(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Osaka, JP (1994 - 2002)
  • Moriguchi, JP (1995 - 2002)
  • Hirataka, JP (2002)
  • Hirakato, JP (2002)
  • Hirakata, JP (1988 - 2006)
  • Kyoto, JP (2001 - 2015)

Company Filing History:


Years Active: 1988-2015

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Areas of Expertise:
Alkaline Storage Battery
Hydrogen Storage Alloy
Nickel Electrode
Metal-Air Battery
Polymer Electrolyte
Fuel Cell Generator
Nonaqueous Electrolyte
Lithium Secondary Battery
Battery Module
Solid Electrolytic Capacitor
Manufacturing Method
Electrode Fabrication
108 patents (USPTO):Explore Patents

Title: The Innovative Legacy of Koji Nishio: Pioneer in Air Battery Technology

Introduction: Koji Nishio, a prominent inventor based in Hirakata, Japan, has made significant contributions to the field of energy storage through his groundbreaking work in air battery technologies. With an impressive portfolio of 108 patents, Nishio stands out as a key figure in the innovation of efficient energy solutions.

Latest Patents: Among Nishio's latest patents are two remarkable advances in air battery technology. The first patent focuses on an air cathode designed for air batteries, which emphasizes excellent high-rate discharge performance. This invention utilizes oxygen as an active material, integrating a catalyst layer that includes an electrode catalyst and an electroconductive material, with metal carbides like tungsten, titanium, and molybdenum improving conductivity.

His second patent introduces an air electrode specifically for metal-air batteries, which includes an innovative air electrode catalyst and an electrolyte based on layered double hydroxides. This work enhances the functionality of metal-air batteries, contributing to their effectiveness and reliability in various applications.

Career Highlights: Throughout his illustrious career, Koji Nishio has made substantial strides in his field while being affiliated with notable companies such as Sanyo Electric Co., Ltd. and Mitsubishi Kasei Corporation. His work has not only focused on enhancing battery performance but also on addressing the growing need for sustainable and efficient energy storage systems.

Collaborations: Nishio's journey in innovation has been supported by collaborations with esteemed colleagues, including Ikuo Yonezu and Shin Fujitani. These partnerships have fostered a culture of creativity and knowledge-sharing, enabling the development of cutting-edge technologies that push the boundaries of current energy solutions.

Conclusion: Koji Nishio's contributions to air battery technology represent a significant leap forward in energy storage innovation. His extensive patent portfolio and collaborative efforts exemplify his commitment to enhancing battery performance and sustainability. As the world continues to seek efficient energy solutions, Nishio's inventions will undoubtedly play a crucial role in shaping a greener future.

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