Kumagaya, Japan

Hiroyoshi Ishii

This inventor holds 3 USPTO granted patents. Top assignees: Kabushiki Kaisha Riken, Fukuda Denshi Co., Ltd., Kabushikikaisha Riken & Simizu Construction Co.. Active years: 1990-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyoshi Ishii. Retrieved from https://idiyas.com/inventor/hiroyoshi-ishii-5cj5ugvt

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


% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 3

Forward Citations = 71(Granted Patents)


Location History:

  • Saitama, JP (1990)
  • Kumagaya, JP (1991 - 1993)

Company Filing History:


Years Active: 1990-1993

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3 patents (USPTO):Explore Patents

Title: Hiroyoshi Ishii: Innovator in Electromagnetic and Magnetic Shielding Technologies

Introduction

Hiroyoshi Ishii is a notable inventor based in Kumagaya, Japan. He has made significant contributions to the field of electromagnetic and magnetic shielding technologies. With a total of three patents to his name, Ishii's work has had a considerable impact on the industry.

Latest Patents

Ishii's latest patents include an electromagnetic shielding sheet and a magnetic-shielding sheet. The electromagnetic shielding sheet comprises a combination of at least one amorphous alloy layer containing cobalt-based amorphous alloy flakes, at least one electrical conductive metal layer, and an insulation layer in between. This innovative sheet is effective in shielding instruments from electromagnetic waves of both low and high frequency. The magnetic-shielding sheet features a laminated-structure layer of soft magnetic amorphous alloy flakes, which are between 5 to 100 micrometers thick and have an aspect ratio of 10 to 15,000.

Career Highlights

Throughout his career, Ishii has worked with prominent companies such as Kabushiki Kaisha Riken and Fukuda Denshi Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in electromagnetic and magnetic shielding.

Collaborations

Ishii has collaborated with notable coworkers, including Misao Kaneko and Kenzo Suzuki. Their combined expertise has contributed to the advancement of technologies in their respective fields.

Conclusion

Hiroyoshi Ishii's contributions to electromagnetic and magnetic shielding technologies demonstrate his innovative spirit and dedication to advancing the field. His patents reflect a commitment to creating effective solutions for shielding instruments from electromagnetic interference.

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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