Kanagawa, Japan

Hiroshi Shirai

USPTO Granted Patents = 62 

Average Co-Inventor Count = 2.8

ph-index = 9

Forward Citations = 303(Granted Patents)

DiyaCoin DiyaCoin 0.88 


Inventors with similar research interests:


Location History:

  • Kanagawa-ken, JP (1998 - 2015)
  • Hadano, JP (2000 - 2015)
  • Tokorozawa, JP (2005 - 2020)
  • Saitama, JP (2002 - 2021)
  • Zama, JP (2019 - 2021)
  • Kyoto, JP (2021)
  • Kawasaki, JP (2002 - 2023)
  • Kanagawa, JP (1994 - 2024)
  • Kangawa, JP (2024)

Company Filing History:


Years Active: 1994-2025

where 'Filed Patents' based on already Granted Patents

62 patents (USPTO):

Title: The Innovations of Hiroshi Shirai: A Journey Through Patents and Collaborations

Introduction: Hiroshi Shirai, an accomplished inventor based in Kanagawa, Japan, has made significant contributions to the field of engineering and technology. With an impressive portfolio of 59 patents, Shirai has demonstrated his profound expertise in developing innovative solutions that enhance various electronic systems.

Latest Patents: Among his latest achievements are two groundbreaking patents. The first is an Electric Actuator, which incorporates a motor and a sophisticated speed reduction mechanism. This actuator features a bearing fixed to a motor shaft with an eccentric axis portion and includes an innovative arrangement of gears and column members that allow for swingable support around the motor axis. The design emphasizes efficiency and functionality, paving the way for advanced applications in automation.

The second notable patent focuses on an Electrical Interconnect system that utilizes conductive polymer contacts. This socket assembly is designed with apertures that house primary and secondary contacts, each featuring distinct contact tips for superior electrical interconnection between electronic packages. The innovative structure of differing contact tips enhances performance and reliability, addressing critical needs in modern electronics.

Career Highlights: Shirai's career has included associations with prominent companies in the technology sector. Notably, he has worked with Nidec Tosok Corporation and Tyco Electronics Japan, where he contributed to the development of cutting-edge technologies. His work in these organizations has been instrumental in driving forward innovations that not only meet market demands but also align with the rapidly evolving landscape of the electronics industry.

Collaborations: Throughout his career, Shirai has collaborated with other talented professionals, including Shinichi Hashimoto and Shuichi Kinjo. These partnerships have fostered an environment of creativity and innovation, leading to the successful development of numerous patents that have advanced the capabilities of electronic systems.

Conclusion: Hiroshi Shirai’s impressive array of patents and collaborations emphasizes his role as a leading figure in technological innovation. His contributions reflect a deep understanding of engineering principles and a commitment to developing solutions that drive progress in the electronic field. As he continues to innovate, Shirai's work will undoubtedly impact future advancements in technology.

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