Kiryu, Japan

Hitoshi Tsukamoto

This inventor holds 1 USPTO granted patent. Top assignee: Mitsuba Corporation. Active years: 2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hitoshi Tsukamoto. Retrieved from https://idiyas.com/inventor/hitoshi-tsukamoto

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


% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 2018

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1 patent (USPTO):Explore Patents

Title: Innovations by Hitoshi Tsukamoto: The Engineer Behind the Reduction Motor

Introduction: Hitoshi Tsukamoto, a notable inventor based in Kiryu-shi, Japan, has made significant contributions to the field of engineering through his innovative designs. With a patent to his name, Tsukamoto represents the spirit of creativity and ingenuity that drives technological advancements.

Latest Patents: Tsukamoto holds a patent for his invention of a reduction motor. This innovative speed reducer includes a first internal gear attached to the housing, an input shaft with an eccentric shaft portion, and a first external gear that has a pitch circle diameter smaller than that of the first internal gear. The design allows for an efficient mechanism in which the input shaft is rotated by a motor, enabling the first external gear to engage with the internal teeth of the first internal gear. Additionally, a holding member fixes the first internal gear in the axial direction of the input shaft, ensuring stability and reliability in operation.

Career Highlights: Hitoshi Tsukamoto is affiliated with Mitsuba Corporation, where he works with a talented team dedicated to creating innovative solutions in engineering. His commitment to excellence and technological advancement has undoubtedly contributed to the company's reputation as a leader in the industry.

Collaborations: Tsukamoto collaborates closely with colleagues such as Tatsuyuki Saito and Tetsuya Watanabe. Together, they explore new ideas and push the boundaries of engineering innovation, leveraging their combined expertise to develop impactful inventions.

Conclusion: Hitoshi Tsukamoto's contributions to the field of engineering, particularly through his patented reduction motor, exemplify the innovative spirit that drives progress in technology. His work at Mitsuba Corporation and collaborations with fellow engineers highlight the importance of teamwork in achieving groundbreaking inventions. As technology continues to evolve, inventors like Tsukamoto play a critical role in shaping the future.

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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