Yokohama, Japan

Keiji Tanaka

This inventor holds 101 USPTO granted patents and 6 published patent applications, primarily in Optical Communication (CPC class H03F3-45475). Top assignees: Sumitomo Electric Industries, Limited, Shell Oil Comapny, Tokyo Metropolitan Institute of Medical Science. Active years: 1980-2026.

USPTO Granted Patents = 101 

% Patents Active = 84.2

Average Co-Inventor Count = 1.9

ph-index = 8

Forward Citations = 313(Granted Patents)

Forward Citations (Not Self Cited) = 283(Dec 10, 2025)


Inventors with similar research interests:


    Location History:

    • Kuji, Takatsu-ku, Kawasaki-shi, Kanagawa-ken, JP (1981)
    • Kamifukuoka, JP (2003 - 2004)
    • Saitama, JP (2004 - 2010)
    • Fujieda, JP (2003 - 2011)
    • Kanagawa, JP (2008 - 2015)
    • Chigasaki, JP (2015 - 2017)
    • Yokohama, JP (1980 - 2020)
    • Tokyo, JP (2000 - 2022)
    • Osaka, JP (2002 - 2024)

    Company Filing History:


    Years Active: 1980-2026

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    Areas of Expertise:
    Optical Module
    Transimpedance Amplifier
    Amplifier Circuit
    Variable Gain Amplifier
    Optical Receiver
    Optical Communication
    Driver Circuit
    Electrostatic Protection
    Differential Amplifier
    Laser Driver
    Printed Board
    Semiconductor Integrated Circuit
    101 patents (USPTO):Explore Patents

    Sure! Here is the article about inventor Keiji Tanaka:

    Title: Unveiling the Innovative Mind of Keiji Tanaka

    Introduction:

    In the realm of technological advancements, inventors like Keiji Tanaka stand out for their groundbreaking contributions. Hailing from Yokohama, Japan, Keiji Tanaka has made a significant mark with his remarkable ingenuity and a stellar track record in the field of patents and inventions.

    Latest Patents:

    Among his impressive portfolio of 88 patents, Keiji Tanaka's latest inventions include a driving circuit and semiconductor integrated circuit tailored for optical communication devices. This driving circuit features a sophisticated design with various transistors, inductors, and bias voltages to enhance the performance of optical communication systems. Additionally, his electrostatic protection circuit and semiconductor integrated circuit showcase his expertise in creating innovative solutions for circuit protection and voltage regulation.

    Career Highlights:

    Keiji Tanaka has garnered professional experience at renowned companies such as Sumitomo Electric Industries, Limited, and Shell Oil Company. His tenure at these esteemed organizations has provided him with a robust foundation in research and development, allowing him to push the boundaries of technological innovation further.

    Collaborations:

    Throughout his illustrious career, Keiji Tanaka has collaborated with industry peers such as Naoki Itabashi and Yoshiyuki Sugimoto. Together, they have worked on cutting-edge projects, fostering a culture of innovation and collaboration that has led to groundbreaking inventions in the field of semiconductor technology.

    Conclusion:

    In conclusion, Keiji Tanaka shines as a visionary inventor with a profound legacy of technological innovation. His contributions in patents and inventions have not only transformed the landscape of optical communication devices but have also inspired a new wave of creativity in the semiconductor industry. Keiji Tanaka's relentless pursuit of excellence serves as a beacon for aspiring inventors and underscores the impactful role of innovation in shaping the future of technology.

    Profile summary based on public USPTO records.
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