Tokyo, Japan

Hiroshi Nakayama

This inventor holds 82 USPTO granted patents and 4 published patent applications, plus 3 CIPO patents and 4 EPO patents, primarily in Optical Recording Media (CPC class 382 22). Top assignees: Sony Corporation, Honda Giken Kogyo Kabushiki Kaisha, Nec Corporation. Active years: 1981-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Nakayama. Retrieved from https://idiyas.com/inventor/hiroshi-nakayama

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

USPTO Granted Patents = 82 

% Patents Active = 79.3


 

Average Co-Inventor Count = 3.0

ph-index = 15

Forward Citations = 637(Granted Patents)

Forward Citations (Not Self Cited) = 629(Dec 10, 2025)


Inventors with similar research interests:


    Location History:

    • Hitachi, JP (1982)
    • Kamifukuoka, JP (1981 - 1983)
    • Niiza, JP (1993)
    • Saitama, JP (1986 - 1995)
    • Yokohama, JP (1990 - 1996)
    • Ibaraki-ken, JP (2005)
    • Tama, JP (2006)
    • Miyagi, JP (1991 - 2015)
    • Chiba, JP (2008 - 2018)
    • Tokyo, JP (1988 - 2022)

    Company Filing History:


    Years Active: 1981-2024

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    Areas of Expertise:
    Optical Recording Medium
    Image Processing
    Electronic Money System
    Control Device
    Information Processing
    Display Device
    Manufacturing Method
    Cation-Exchange Membrane
    Magnetooptic Recording
    Electrical Connector
    Optical Disc
    Biopolymer Identification
    82 patents (USPTO):Explore Patents

    Title: Hiroshi Nakayama: A Visionary Innovator from Tokyo

    Introduction

    Hiroshi Nakayama, a prolific inventor based in Tokyo, Japan, has made significant contributions to the field of optical technologies. With an impressive portfolio of 82 patents, Nakayama's work focuses on enhancing the functionality and efficiency of electronic devices.

    Latest Patents

    Among his latest innovations are two noteworthy patents. The first is for an "Optical recording medium substrate" which includes a polycarbonate with an average molecular weight ranging from 15000 to 16000, and a mass per unit volume at 25° C. between 1.1930 g/cm³ and 1.2000 g/cm³. This innovation aims to advance the performance of optical recording media. The second patent is for a "Control device, control method, and electronic device" that allows for seamless switching and remote operation of various control target devices. This innovation utilizes infrared light codes with unique IDs to facilitate user interaction, enabling a natural operation experience with remote controllers.

    Career Highlights

    Hiroshi Nakayama has held prominent positions at several leading companies, including Sony Corporation and Honda. His work at these organizations has not only contributed to their technological advancements but also significantly bolstered his reputation as a leading innovator in the industry.

    Collaborations

    Throughout his career, Nakayama has had the pleasure of collaborating with talented professionals like Shigeki Wakasa and Yasuharu Ishikawa. These partnerships have fostered a creative environment that has fueled his inventive spirit and led to groundbreaking developments.

    Conclusion

    In summary, Hiroshi Nakayama's extensive patent portfolio and innovative spirit make him a remarkable figure in the field of technology. His contributions, particularly in optical recording and control systems, have paved the way for future advancements, ensuring that his legacy in the world of inventions will endure.

    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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