Kanagawa, Japan

Hirofumi Ienaga

This inventor holds 3 USPTO granted patents. Top assignees: Nissan Motor Company Limited, Ohi Seisakusho Co., Ltd.. Active years: 1987-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Ienaga. Retrieved from https://idiyas.com/inventor/hirofumi-ienaga-hueg4ps4

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 2

Forward Citations = 15(Granted Patents)


Location History:

  • Kanagawa, JP (1987 - 1988)
  • Kawasaki, JP (1990)

Company Filing History:


Years Active: 1987-1990

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3 patents (USPTO):Explore Patents

Title: Hirofumi Ienaga: Innovator in Automotive Technology

Introduction

Hirofumi Ienaga is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of innovative control devices for vehicles. With a total of 3 patents to his name, Ienaga's work reflects his dedication to enhancing vehicle functionality and user experience.

Latest Patents

One of Ienaga's latest patents is an openable roof control device for wheeled motor vehicles. This control device is designed to manage the operation of an openable roof, featuring three slide mechanisms that are strategically arranged on the vehicle's body. Each slide mechanism includes a carrier device that supports the openable roof, allowing it to move between fully closed and fully open positions. The device is equipped with three electric actuators that, when energized, facilitate the movement of the carrier devices. Additionally, latch assemblies are incorporated to secure at least two of the carrier devices relative to the vehicle body when the roof reaches either the fully closed or fully open position. The synchronized operation of the electric actuators ensures smooth opening and closing of the roof.

Another notable invention by Ienaga is the automobile rear combination lamp, which showcases his versatility in automotive design.

Career Highlights

Throughout his career, Hirofumi Ienaga has worked with prominent companies in the automotive industry, including Nissan Motor Company Limited and Ohi Seisakusho Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Ienaga has collaborated with esteemed colleagues such as Thomas H. Semple and Junichi Maekawa. These partnerships have further enriched his work and expanded the impact of his inventions in the automotive sector.

Conclusion

Hirofumi Ienaga's contributions to automotive technology through his patents and collaborations highlight his innovative spirit and commitment to improving vehicle functionality. His work continues to influence the industry and inspire future advancements in automotive design.

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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