Adachi, Japan

Shigekazu Nagai

This inventor holds 136 USPTO granted patents, primarily in Electric Actuators (CPC class 294 641). Top assignees: Smc Kabushiki Kaisha, Smc Corporation. Active years: 1992-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigekazu Nagai. Retrieved from https://idiyas.com/inventor/shigekazu-nagai

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


% Patents Active = 83.1

Average Co-Inventor Count = 2.6

ph-index = 25

Forward Citations = 2,014(Granted Patents)

Forward Citations (Not Self Cited) = 1,903(Dec 10, 2025)


Inventors with similar research interests:


    Location History:

    • Sohka, JP (1992)
    • Yawara, JP (1997)
    • Yawara-mura, JP (1997 - 1999)
    • Tsukuba-gun, JP (2001)
    • Ibaraki-ken, JP (1996 - 2002)
    • Tokyo-to, JP (2002 - 2006)
    • Tsukubamirai, JP (2007)
    • Ibaraki, JP (1993 - 2009)
    • Tokyo, JP (1998 - 2009)
    • Adachi-ku, JP (1999 - 2009)

    Company Filing History:


    Years Active: 1992-2009

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    Areas of Expertise:
    Electric Actuator
    Speed Reducing Ratio
    Motion Converter
    Vacuum Equipment
    Ball Screw Mechanism
    Motor Controller
    Clamp Apparatus
    Electric Cylinder
    Suction Unit
    Control System
    Lubricating Structure
    Sensor Attachment
    136 patents (USPTO):Explore Patents

    Title: Shigekazu Nagai: Innovations and Patents that Push Boundaries

    Introduction:

    In the world of inventions and patents, there are remarkable individuals whose contributions shape our lives. Shigekazu Nagai, based in Adachi-ku, Japan, is such an individual. With an impressive portfolio of 98 patents, Nagai has consistently demonstrated his innovative prowess. In this article, we explore his latest patents, career highlights, notable collaborations, and the significance of his work.

    Latest Patents:

    One of Nagai's notable recent inventions is the Automatic Speed Reducing Ratio-Switching Apparatus. This apparatus comprises multiple planetary gear mechanisms and clutch members that allow for smooth and efficient speed changes. By integrating viscous resistance elements, Nagai's invention minimizes friction, enabling precise control over speed changes. This technology has the potential for diverse applications, such as in automotive transmissions or industrial machinery.

    Another impressive patent by Nagai is the Electric Actuator Capable of Converting Rotational Motion to Linear Motion. Designed to absorb shock effectively, this actuator employs piston dampers and end dampers to cushion any impact on its component parts. With this invention, Nagai enhances the durability and functionality of electric actuators, which can find utility in industries ranging from manufacturing to robotics.

    Career Highlights:

    Shigekazu Nagai's career spans prestigious companies, where he has consistently contributed to technological advancements. Notably, he worked at SMC Kabushiki Kaisha and SMC Corporation, global leaders in the manufacturing of pneumatic and electric automation equipment. His association with these forward-thinking organizations highlights Nagai's expertise in designing cutting-edge systems and his commitment to innovation throughout his career.

    Collaborations:

    Throughout his journey, Nagai has collaborated with talented individuals, further enriching his achievements. Among his notable coworkers are Akio Saitoh and Shuuzou Sakurai. Such collaborations often provide fertile ground for breakthrough ideas and result in patents that have a lasting impact on various industries.

    Conclusion:

    Shigekazu Nagai has made significant contributions to the world of inventions and patents through his numerous innovative solutions. With 98 patents to his name, his work has the potential to revolutionize various sectors. Whether it is developing a more efficient speed reduction mechanism or absorbing shock in electric actuators, Nagai's creations exemplify the spirit of pushing boundaries and improving existing technologies. His career highlights and collaborations reflect his dedication to advancing the fields of automation and mechanics. As we look to the future, the continued contributions of inventors like Nagai promise exciting advancements that will shape the world we live in.

    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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