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For the Inventor, By the Inventor

Yokosuka, Japan

Yasumasa Tsubota

This inventor holds 15 USPTO granted patents. Top assignee: Nissan Motor Company Limited. Active years: 1986-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasumasa Tsubota. Retrieved from https://idiyas.com/inventor/yasumasa-tsubota

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

USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 10

Forward Citations = 311(Granted Patents)


Location History:

  • Yokosuka, JP (1986 - 1989)
  • Zama, JP (1991 - 1992)

Company Filing History:

goldMedal15 out of 13,420 
 
Nissan Motor Company Limited
 patents

Years Active: 1986-1992

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15 patents (USPTO):Explore Patents
1. 5104142 - Wheel alignment adjusting mechanism (1992-04-14),
2. 5031928 - Wheel alignment adjusting mechanism (1991-07-16),
3. 4878557 - Auxiliary steering system for wheeled vehicle (1989-11-07),
4. 4781262 - Vehicle steering system (1988-11-01),
5. 4744586 - Wishbone suspension for automotive vehicle (1988-05-17),
6. 4705131 - Four-wheel steering control system for vehicle (1987-11-10),
7. 4705130 - Method of controlling vehicle (1987-11-10),
8. 4669567 - Vehicle steering system (1987-06-02),
9. 4666013 - Steering control system for wheeled vehicle (1987-05-19),
10. 4640379 - Vehicle steering control system (1987-02-03),
11. 4625822 - Rear wheel steering control for vehicle (1986-12-02),
12. 4613153 - Stabilizer for an automotive vehicle (1986-09-23),
13. 4588039 - Vehicle steering control system and method of operating same (1986-05-13),
14. 4586581 - Vehicle control system (1986-05-06),
15. 4579186 - Vehicle steering system (1986-04-01),

Title: Innovations of Yasumasa Tsubota: A Pioneer in Automotive Engineering

Introduction

Yasumasa Tsubota, an inventive engineer located in Yokosuka, Japan, has significantly contributed to the automotive industry through his innovative designs and mechanisms. With a remarkable portfolio of 15 patents, Tsubota has established himself as a leading inventor in vehicle suspension technology.

Latest Patents

Tsubota's latest invention is a sophisticated wheel alignment adjusting mechanism designed for the rear suspension system of automotive vehicles. This mechanism consists of a rear upper link that connects a wheel supporting member to a bracket projecting from the suspension member assembly. The innovation involves a pivotal connection through a pivot pin, which is strategically fitted within elongate openings formed in the brackets. Notably, the longitudinal axes of these openings are inclined at a 30-degree angle towards the outboard direction, enhancing the precision of wheel alignment adjustments while accommodating suspension strokes.

Career Highlights

Yasumasa Tsubota's career has been closely associated with Nissan Motor Company Limited, where he has played a pivotal role in developing advanced automotive technologies. His expertise and innovative spirit have led to significant improvements in vehicle safety and handling dynamics, further solidifying Nissan's reputation as a leader in automotive engineering.

Collaborations

During his career, Tsubota has collaborated with fellow engineers such as Yasuji Shibahata and Yukio Fukunaga. These collaborations have fostered a creative environment where ideas are freely exchanged, leading to groundbreaking advancements in vehicle technology.

Conclusion

Yasumasa Tsubota continues to make remarkable contributions to the automotive sector, particularly in suspension mechanics. His inventions not only enhance vehicle performance but also underline the importance of innovation in the automotive industry. Through his dedication to developing cutting-edge technologies, Tsubota exemplifies the spirit of invention that drives progress in modern engineering.

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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