Yamagata, Japan

Hiroshi Sampei

This inventor holds 7 USPTO granted patents. Top assignee: Mitsumi Electric Company Ltd.. Active years: 1996-1999.

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

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 = 2.9

ph-index = 2

Forward Citations = 16(Granted Patents)


Company Filing History:


Years Active: 1996-1999

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7 patents (USPTO):Explore Patents

Title: Hiroshi Sampei: Innovator in Magnetic Head Technology

Introduction

Hiroshi Sampei is a notable inventor based in Yamagata, Japan. He has made significant contributions to the field of magnetic head technology, holding a total of 7 patents. His work has been instrumental in advancing the efficiency and functionality of magnetic heads used in various applications.

Latest Patents

One of his latest patents is titled "Magnetic head having a C-type core and an I-type core." This invention features a magnetic head that includes a pair of a C-type core and an I-type core, which are butt-joined together. The design incorporates a gap section defined between the butt-joined surfaces of the cores, along with track width regulating grooves that limit the width of the gap to a predetermined size. Additionally, bonding glass is used to secure the track width regulating grooves. Another significant patent is "Magnetic head having a spacer for adjusting a slider height." This invention involves a magnetic head designed for writing and reading magnetic disks, featuring sliders made from a nonmagnetic material and a spacer formed from a ferrite-group magnetic material. The materials are selected to have similar coefficients of thermal expansion, enhancing the performance of the magnetic head.

Career Highlights

Hiroshi Sampei is currently employed at Mitsumi Electric Company Ltd., where he continues to innovate and develop new technologies. His work has garnered attention in the industry, contributing to the advancement of magnetic head technology.

Collaborations

Throughout his career, Hiroshi has collaborated with notable colleagues, including Masashi Sato and Noriaki Kudo. These collaborations have further enriched his work and led to the development of innovative solutions in the field.

Conclusion

Hiroshi Sampei's contributions to magnetic head technology are significant and impactful. His inventions continue to shape the industry, demonstrating his expertise and commitment to innovation.

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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