Kiryu, Japan

Masazumi Nagasawa

This inventor holds 1 USPTO granted patent. Top assignee: Kabushiki Kaisha Yamada Seisakusho. Active years: 2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masazumi Nagasawa. Retrieved from https://idiyas.com/inventor/masazumi-nagasawa

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 = 3.0

ph-index = 1

Forward Citations = 20(Granted Patents)


Company Filing History:


Years Active: 2000

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1 patent (USPTO):Explore Patents

Title: Masazumi Nagasawa: Innovator in Steering Shaft Technology

Introduction: Masazumi Nagasawa, an accomplished inventor from Kiryu, Japan, has made significant contributions to the field of automotive engineering. With a focus on steering mechanisms, his innovative designs have the potential to enhance vehicle performance and safety.

Latest Patents: Nagasawa holds a patent for an "Intermediate Shaft Apparatus of Steering Shaft Assembly." This invention features a well-thought-out design comprising an input shaft, a coupling shaft, and an output shaft. The coupling shaft is fixed to the input shaft in a circumferential direction while allowing axial movement only during impact. Additionally, a buffer joint is integrated at the output shaft's axial end, consisting of an output-side yoke member and a cup member linked via an elastic member. This thoughtful design enables improved performance during various driving conditions, showcasing his expertise in engineering.

Career Highlights: Currently, Masazumi Nagasawa works at Kabushiki Kaisha Yamada Seisakusho, where he applies his engineering skills to develop advanced automotive components. His innovative mindset and technical proficiency have placed him at the forefront of steering system technology.

Collaborations: Nagasawa collaborates with notable colleagues including Isao Fujiu and Toshihiko Aoyama, both of whom contribute to the team's collective knowledge and expertise in automotive innovations. Their combined efforts strive to push the boundaries of technology within the industry.

Conclusion: Masazumi Nagasawa is a remarkable inventor whose contributions to steering shaft technology reflect his dedication to improving vehicle safety and efficiency. With his patent and collaborative work at Kabushiki Kaisha Yamada Seisakusho, he continues to influence the automotive engineering landscape in Japan and beyond.

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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