Nagoya, Japan

Masato Shimei

This inventor holds 18 USPTO granted patents and 1 published patent application. Top assignees: Aisin Seiki Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho. Active years: 1989-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masato Shimei. Retrieved from https://idiyas.com/inventor/masato-shimei

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

USPTO Granted Patents = 18 

% Patents Active = 94.4

Average Co-Inventor Count = 2.4

ph-index = 7

Forward Citations = 120(Granted Patents)


Location History:

  • Odaka, JP (1991)
  • Midori, JP (1992)
  • Nagoya, JP (1989 - 2008)

Company Filing History:


Years Active: 1989-2008

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18 patents (USPTO):Explore Patents

Title: Masato Shimei: Innovator in Automatic Transmission Technology

Introduction

Masato Shimei is a distinguished inventor based in Nagoya, Japan, renowned for his contributions to automatic transmission technology. With a remarkable total of 18 patents to his name, Shimei has demonstrated a profound commitment to advancing automotive innovations. His inventions reflect a deep understanding of mechanical systems and a dedication to improving vehicle performance.

Latest Patents

Among Shimei's notable inventions are two latest patents related to oil pressure control in automatic transmissions. The first patent, titled "Oil pressure control apparatus for an automatic transmission," focuses on a sophisticated mechanism that calculates the output-side rotational speeds of frictional engagement elements based on the transmission output shaft's rotational speed. It effectively selects the appropriate shift stage suitable for various driving conditions, enhancing the efficiency of shifting within the transmission system.

The second patent, "Automatic transmission system and method for controlling thereby," encompasses a comprehensive system that includes a rotational speed detector. This innovation learns the oil pressure characteristic values of friction engagement elements based on variations in the rotation numbers when the elements are engaged, fundamentally improving transmission control during stationary conditions.

Career Highlights

Masato Shimei has had a significant impact on the automotive industry through his work with prominent companies. He contributed his expertise at Aisin Seiki Corporation and Toyota Chuo Kenkyusho, where he played a vital role in developing cutting-edge transmission systems. His insights have helped shape modern automatic transmission technology, making vehicles more efficient and reliable.

Collaborations

Throughout his career, Shimei has collaborated with talented individuals such as Shigeki Goto and Tetsuhiro Miyazawa. These partnerships have enabled him to innovate and refine his inventions, further enhancing the automotive technology landscape.

Conclusion

Masato Shimei stands as a testament to the spirit of innovation in the automotive field. His 18 patents reflect not only his ingenuity as an inventor but also his commitment to improving vehicle performance and safety. With his latest inventions pushing the boundaries of automatic transmission technology, Shimei continues to inspire future generations of engineers and inventors.

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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