Tokyo, Japan

Yoshihiko Ishii

This inventor holds 7 USPTO granted patents and 3 published patent applications. Top assignees: Hitachi, Ltd., Hitachi-Ge Nuclear Energy, Ltd.. Active years: 1988-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihiko Ishii. Retrieved from https://idiyas.com/inventor/yoshihiko-ishii

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

USPTO Granted Patents = 7 

% Patents Active = 85.7

Average Co-Inventor Count = 6.2

ph-index = 4

Forward Citations = 40(Granted Patents)


Location History:

  • Hitachi, JP (1988 - 1989)
  • Hitachioota, JP (1992)
  • Hitachinaka, JP (2010)
  • Tokyo, JP (2019 - 2022)

Company Filing History:


Years Active: 1988-2022

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7 patents (USPTO):Explore Patents

Title: Innovations by Yoshihiko Ishii

Introduction

Yoshihiko Ishii is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of nuclear energy, holding a total of 7 patents. His work focuses on enhancing the safety and efficiency of nuclear power plants.

Latest Patents

One of his latest patents is a nuclear power plant venting system. This invention addresses the challenges of discharging vapor from a primary containment vessel while preventing the release of radioactive noble gases. The system is designed to continuously reduce pressure within the containment vessel without the need for an enclosing vessel or external power source. Another significant patent is an operation assistance apparatus for nuclear plant accidents. This invention provides operators with a visual display of sensor signals and estimated future signals, allowing them to understand the time available for executing necessary actions during an emergency.

Career Highlights

Yoshihiko Ishii has worked with prominent companies in the nuclear energy sector, including Hitachi, Ltd. and Hitachi-GE Nuclear Energy, Ltd. His experience in these organizations has contributed to his expertise in developing innovative solutions for nuclear power generation.

Collaborations

Throughout his career, Ishii has collaborated with esteemed colleagues such as Sadao Uchikawa and Motoo Aoyama. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and advancements in technology.

Conclusion

Yoshihiko Ishii's contributions to nuclear energy through his patents and collaborations highlight his commitment to innovation and safety in the industry. His work continues to influence the development of more secure and efficient nuclear power systems.

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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