Kudamatsu, Japan

Eiji Harada

This inventor holds 2 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1989-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Harada. Retrieved from https://idiyas.com/inventor/eiji-harada-eio9oxp2

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


% Patents Active = 50.0

Average Co-Inventor Count = 2.7

ph-index = 1

Forward Citations = 5(Granted Patents)


Location History:

  • Hitachi, JP (1989)
  • Kudamatsu, JP (2008)

Company Filing History:


Years Active: 1989-2008

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2 patents (USPTO):Explore Patents

Title: Eiji Harada: Innovator in Railway Technology and Semiconductor Devices

Introduction

Eiji Harada is a notable inventor based in Kudamatsu, Japan. He has made significant contributions to the fields of railway technology and semiconductor devices. With a total of 2 patents, Harada's work reflects his commitment to innovation and engineering excellence.

Latest Patents

One of Harada's latest patents is a railway car with an overload detector. This invention provides an overload detection system with a simplified configuration, designed for railway cars equipped with a connecting bogie. The system utilizes pneumoelectric converters to monitor the inner pressure of air springs, allowing for accurate overload determination. Another significant patent is a semiconductor device featuring parallel-connected, self turn-off type semiconductor elements. This design aims to eliminate current imbalances by arranging the elements and their connections in geometrical symmetry.

Career Highlights

Eiji Harada is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to contribute to advancements in both railway systems and semiconductor technology. His inventions have the potential to enhance safety and efficiency in these critical sectors.

Collaborations

Harada has collaborated with notable coworkers, including Kenta Konishi and Hitoshi Matsuzaki. Their teamwork has fostered an environment of innovation and creativity, leading to the development of impactful technologies.

Conclusion

Eiji Harada's contributions to railway technology and semiconductor devices exemplify his innovative spirit and dedication to engineering. His patents not only advance technology but also enhance safety and efficiency in their respective fields.

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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