Hitachi, Japan

Hirotsugu Fujimoto

This inventor holds 4 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.. Active years: 1983-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirotsugu Fujimoto. Retrieved from https://idiyas.com/inventor/hirotsugu-fujimoto

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.9

ph-index = 3

Forward Citations = 39(Granted Patents)


Company Filing History:


Years Active: 1983-1988

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4 patents (USPTO):Explore Patents

Title: Innovations of Hirotsugu Fujimoto

Introduction

Hirotsugu Fujimoto is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of engineering, particularly in the development of methods and apparatuses related to welded structures and nuclear reactor safety. With a total of 4 patents to his name, Fujimoto's work reflects a commitment to innovation and safety in engineering practices.

Latest Patents

Fujimoto's latest patents include a method of subjecting welded structures to heat treatment. This method involves creating a tensile yield on the inner surface and a compressive yield on the outer surface of the welded structure. By placing a cooling medium inside the structure and heating the outer surface, a temperature difference is established, enhancing the structural integrity. Another significant patent is a rail apparatus designed for running an automatic ultrasonic flaw detector around a reactor pressure vessel. This apparatus is crucial for detecting flaws in weld beads, ensuring the safety and reliability of nuclear reactors.

Career Highlights

Throughout his career, Fujimoto has worked with prominent companies such as Hitachi, Ltd. and Hitachi Engineering Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in engineering and technology.

Collaborations

Fujimoto has collaborated with esteemed colleagues, including Tatsukuma Hosono and Akisuke Naruse. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Hirotsugu Fujimoto's contributions to engineering through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the fields of welding and nuclear safety, showcasing the importance of innovation in engineering practices.

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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