Hitachi, Japan

Masaaki Tsubaki

This inventor holds 5 USPTO granted patents and 1 published patent application. Top assignees: Hitachi, Ltd., Hitachi-Ge Nuclear Energy, Ltd.. Active years: 2005-2013.

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

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

USPTO Granted Patents = 5 

% Patents Active = 40.0

Average Co-Inventor Count = 4.3

ph-index = 1

Forward Citations = 3(Granted Patents)


Location History:

  • Hitachi, JP (2005 - 2011)
  • Ibaraki, JP (2011 - 2013)

Company Filing History:


Years Active: 2005-2013

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5 patents (USPTO):Explore Patents

Title: Masaaki Tsubaki: Innovator in Boiling Water Reactor Technology

Introduction

Masaaki Tsubaki is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of nuclear energy, particularly in the development of technologies related to boiling water reactors. With a total of five patents to his name, Tsubaki's work has had a substantial impact on reactor monitoring and control systems.

Latest Patents

Tsubaki's latest patents include a monitoring method and program for boiling water reactors, as well as an acoustic damping method for these reactors. His innovative approach involves a reactor pressure vessel, a steam pipe for transporting steam, and a high-pressure turbine driven by the steam. The method he developed includes monitoring fluctuating pressure in the main steam line and controlling the opening degree of a bleeding valve based on the magnitude of this fluctuating pressure. This technology aims to enhance the safety and efficiency of boiling water reactors.

Career Highlights

Throughout his career, Masaaki Tsubaki has worked with notable companies such as Hitachi, Ltd. and Hitachi-GE Nuclear Energy, Ltd. His experience in these organizations has allowed him to refine his expertise in nuclear technology and contribute to advancements in reactor design and operation.

Collaborations

Tsubaki has collaborated with esteemed colleagues, including Atsushi Watanabe and Yoichi Wada. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas in the field of nuclear energy.

Conclusion

Masaaki Tsubaki's contributions to boiling water reactor technology exemplify his dedication to innovation in the nuclear energy sector. His patents and collaborative efforts continue to influence the industry, ensuring safer and more efficient reactor operations.

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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