Kashiwara, Japan

Takashi Tsutsui

This inventor holds 6 USPTO granted patents. Top assignee: Koyo Seiko Company, Ltd.. Active years: 1990-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Tsutsui. Retrieved from https://idiyas.com/inventor/takashi-tsutsui-ywktgcoe

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

Calculating rank

% Patents Active = 83.3

Average Co-Inventor Count = 2.0

ph-index = 5

Forward Citations = 91(Granted Patents)


Location History:

  • Osaka, JP (1990 - 2002)
  • Kashiwara, JP (2004 - 2007)

Company Filing History:


Years Active: 1990-2007

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6 patents (USPTO):Explore Patents

Title: The Innovations of Takashi Tsutsui

Introduction

Takashi Tsutsui is a notable inventor based in Kashiwara, Japan. He has made significant contributions to the field of electric power steering systems. With a total of 6 patents to his name, Tsutsui's work has had a considerable impact on automotive technology.

Latest Patents

Among his latest patents is an electric power steering apparatus featuring a displacing mechanism. This design includes a fitting hole portion in the gear housing that accommodates a bearing for a worm shaft. The worm shaft transmits the rotating force from a steering assisting motor to a steering shaft equipped with a worm wheel. The mechanism is ingeniously designed with a pair of split members that allow for adjustment of the distance between the shaft center of the worm shaft and the rotation center of the worm wheel. Another patent involves a similar electric power steering apparatus that incorporates a reduction mechanism. In this design, the inner peripheral face of the fitting hole is inclined to fit and hold a bearing for the worm shaft. The inclined contact surface of the bearing moves along the inclined face to adjust the distance between the shaft center and the rotation center.

Career Highlights

Tsutsui is currently employed at Koyo Seiko Company, Ltd., where he continues to innovate in the automotive sector. His work has been instrumental in enhancing the performance and reliability of steering systems in vehicles.

Collaborations

Throughout his career, Tsutsui has collaborated with talented individuals such as Masayuki Watanabe and Masanori Kobayashi. These collaborations have fostered a creative environment that has led to the development of advanced technologies.

Conclusion

Takashi Tsutsui's contributions to electric power steering technology exemplify his innovative spirit and dedication to improving automotive systems. His patents reflect a commitment to enhancing vehicle performance and safety.

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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