Ibaraki, Japan

Junji Tsumura

This inventor holds 1 USPTO granted patent. Top assignee: Hitachi Construction Machinery Co., Ltd.. Active years: 2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junji Tsumura. Retrieved from https://idiyas.com/inventor/junji-tsumura-7zpl1cjp

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 = 4.0

ph-index = 1

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 2000

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1 patent (USPTO):Explore Patents

Title: The Innovative Mind of Junji Tsumura

Introduction: Junji Tsumura, an accomplished inventor hailing from Ibaraki-ken, Japan, has made significant contributions to the field of mechanical engineering. As a key figure at Hitachi Construction Machinery Co., Ltd., he has focused his expertise on enhancing the efficiency and functionality of construction machinery.

Latest Patents: Tsumura holds a notable patent for an "Operation Control Device for Three-Joint Type Excavator." This innovation showcases his commitment to developing advanced solutions that improve operational capabilities within the construction industry.

Career Highlights: Throughout his career at Hitachi Construction Machinery, Tsumura has demonstrated exceptional skill and creativity in engineering design. His contributions have played a critical role in elevating the standards of excavator technology, making construction projects safer and more efficient.

Collaborations: Tsumura has collaborated with esteemed colleagues such as Morio Oshina and Mitsuo Sonoda. Together, they have combined their knowledge and expertise to push the boundaries of innovation in the machinery sector.

Conclusion: Junji Tsumura stands out as a remarkable inventor whose work continues to influence the construction machinery landscape. His dedication to innovation, along with his collaborative spirit, ensures a lasting impact on the industry and inspires future advancements.

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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