Hirakata, Japan

Junji Niikura

This inventor holds 30 USPTO granted patents, primarily in Fuel Cell Technology. Top assignees: Matsushita Electric Industrial Co., Ltd., Panasonic Corporation. Active years: 1991-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junji Niikura. Retrieved from https://idiyas.com/inventor/junji-niikura

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


% Patents Active = 50.0

Average Co-Inventor Count = 5.2

ph-index = 11

Forward Citations = 360(Granted Patents)


Location History:

  • Katano, JP (1991)
  • Hirakata, JP (1993 - 2008)
  • Osaka, JP (1994 - 2010)

Company Filing History:


Years Active: 1991-2010

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Areas of Expertise:
Proton Conductor
Electrolyte Membrane
Polymer Electrolyte
Gas Diffusion Electrode
Solid Polymer Fuel Cell
Hydrogen Isotope Separation
Molten Carbonate Fuel Cell
Fuel Cell System
High Temperature Fuel Cell
Hydrogen Absorbing Alloys
Mixed Ionic Conductors
Film Electrode
30 patents (USPTO):Explore Patents

Title: Junji Niikura – Innovator in Fuel Cell Technology

Introduction

Junji Niikura, a prominent inventor based in Hirakata, Japan, has made significant contributions to the field of fuel cell technology. With an impressive portfolio of 30 patents, his work focuses on enhancing the efficiency and safety of fuel cells through innovative materials and designs.

Latest Patents

Among his latest inventions, Niikura has developed a proton conductor that comprises a base material, an acidic substance, and a basic substance. The acidic substance contains protons, and at least part of these protons are dissociated by the basic substance. Additionally, he has incorporated the idea that at least one of the acidic and basic substances may be polymer-based. For the base material, a powder or a porous body with pores or through-holes is utilized. Furthermore, Niikura has designed an organic compound with both hydrophilic and hydrophobic elements to enhance functionality.

Additionally, his patent on a fuel cartridge for fuel cells incorporates a fuel storage container and a fuel supply port designed to prevent leakage. This innovation features a protection mechanism, including a door for opening and closing, along with a locking mechanism to ensure that the door remains securely closed when the cartridge is not installed on the fuel cell. This design minimizes the risk of fuel leakage due to user mishandling.

Career Highlights

Niikura's professional journey includes significant roles at reputable companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His experience in these organizations has provided him with the platform to innovate and advance in the field of fuel cell technologies.

Collaborations

Throughout his career, Niikura has collaborated with notable individuals including Kazuhito Hatoh and Teruhisa Kanbara. Their combined expertise has greatly influenced the progression of Niikura's inventions and played a crucial role in the development of new technologies in the field.

Conclusion

Junji Niikura stands out as a leading figure in the enhancement of fuel cell technology. His 30 patents reflect his dedication to innovation and safety in fuel cell design, paving the way for future advancements in energy solutions. As the world increasingly turns towards sustainable energy sources, inventions like Niikura's play a pivotal role in shaping a more efficient future.

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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