Hitachiota, Japan

Eiji Ashida

This inventor holds 11 USPTO granted patents and 1 published patent application. Top assignee: Hitachi, Ltd.. Active years: 1981-2014.

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

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

USPTO Granted Patents = 11 

% Patents Active = 100.0

Average Co-Inventor Count = 7.5

ph-index = 7

Forward Citations = 271(Granted Patents)


Location History:

  • Hitachi, JP (1981 - 1983)
  • Hitachiohta, JP (1997)
  • Hitachiota, JP (1990 - 2014)

Company Filing History:


Years Active: 1981-2014

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11 patents (USPTO):Explore Patents

Title: Eiji Ashida: Innovator in Nuclear Power and Magnetoresistive Technology

Introduction

Eiji Ashida is a prominent inventor based in Hitachiota, Japan. He has made significant contributions to the fields of nuclear power and magnetoresistive technology. With a total of 11 patents to his name, Ashida's work has had a substantial impact on modern engineering practices.

Latest Patents

Among his latest patents, Ashida has developed a method of manufacturing a core shroud for nuclear power plants. This invention provides a technique for assembling a groove portion in the core shroud, which is crucial for ensuring the integrity of nuclear plant structures. The method utilizes laser welding to create a weld joint with minimal plastic distortion and residual stress. Another notable patent is his method of fabricating a magnetoresistive thin-film magnetic head. This invention involves a magnetic domain controlling film that enhances the conversion of magnetic signals into electrical signals, thereby improving the efficiency of magnetic recording technologies.

Career Highlights

Eiji Ashida has dedicated his career to advancing technology in critical areas such as nuclear energy and data storage. His innovative approaches have not only improved manufacturing processes but have also contributed to the safety and efficiency of nuclear power plants. His work exemplifies the intersection of engineering and practical application in high-stakes environments.

Collaborations

Throughout his career, Ashida has collaborated with notable colleagues, including Moriaki Fuyama and Makoto Morijiri. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Eiji Ashida's contributions to technology, particularly in nuclear power and magnetoresistive systems, highlight his role as a leading inventor. His patents reflect a commitment to improving engineering practices and advancing technological capabilities.

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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