Yokohama, Japan

Masaaki Hirayama

This inventor holds 10 USPTO granted patents and 1 published patent application and 7 EPO patents. Top assignees: Tokyo Institute of Technology, Toyota Jidosha Kabushiki Kaisha, Doryokuro Kakunenryo Kaihatsu Jigyodan. Active years: 1984-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Hirayama. Retrieved from https://idiyas.com/inventor/masaaki-hirayama

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

USPTO Granted Patents = 10 

% Patents Active = 100.0

 

Average Co-Inventor Count = 4.6

ph-index = 4

Forward Citations = 137(Granted Patents)


Location History:

  • Yokohama, JP (1984 - 2019)
  • Kawasaki, JP (2018 - 2019)
  • Tokyo, JP (2021)

Company Filing History:


Years Active: 1984-2021

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10 patents (USPTO):Explore Patents

Title: Masaaki Hirayama: Innovator in Sulfide Solid Electrolytes

Introduction

Masaaki Hirayama is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of solid electrolytes, particularly in the development of sulfide solid electrolyte materials. With a total of 10 patents to his name, Hirayama's work is paving the way for advancements in battery technology.

Latest Patents

Hirayama's latest patents focus on sulfide solid electrolytes that exhibit both lithium ion conductivity and chemical stability. One of his notable inventions is a sulfide solid electrolyte material that does not contain germanium and has a reduced lithium content compared to conventional materials. This innovation features a crystal structure represented by the composition formula (LiSn)(SiSn)(PSi)S, which allows for enhanced performance in battery applications. Another significant patent involves a sulfide solid electrolyte material that demonstrates favorable ion conductivity and resistance to reduction, characterized by a specific peak in X-ray diffraction measurements.

Career Highlights

Throughout his career, Hirayama has worked with esteemed institutions such as the Tokyo Institute of Technology and Toyota Motor Corporation. His research has been instrumental in advancing the understanding and application of solid electrolytes in energy storage systems.

Collaborations

Hirayama has collaborated with notable colleagues, including Ryoji Kanno and Yuki Kato, contributing to the collective knowledge and innovation in the field of solid-state batteries.

Conclusion

Masaaki Hirayama's contributions to the development of sulfide solid electrolytes are significant and impactful. His innovative patents and collaborations highlight his role as a leading inventor in the field 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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