Ushiku, Japan

Ryoichi Ichikawa

This inventor holds 4 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1994-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoichi Ichikawa. Retrieved from https://idiyas.com/inventor/ryoichi-ichikawa-543nvjdx

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 = 4.0

ph-index = 2

Forward Citations = 25(Granted Patents)


Location History:

  • Ibaraki, JP (1994)
  • Ibaraki-ken, JP (1998)
  • Ushiku, JP (2004 - 2005)

Company Filing History:


Years Active: 1994-2005

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4 patents (USPTO):Explore Patents

Title: The Innovative Journey of Ryoichi Ichikawa

Introduction

Ryoichi Ichikawa, an accomplished inventor based in Ushiku, Japan, has made significant contributions to the field of magnetic disk devices. With a total of four patents to his name, he has developed cutting-edge technologies that enhance data recording and retrieval processes.

Latest Patents

Among Ichikawa's latest innovations is the "Magnetic head with IC thereon with recording frequency controlled according to IC position." This patent details a magnetic disk device that integrates a magnetic head unit with an integrated circuit (IC) for amplifying information signals. A key feature is the control circuit that adjusts the recording frequency based on the radial position of the IC on the disk.

Another notable patent is the "Magnetic disk device with magnetic head supporting mechanism having integrated circuit mounted thereon." This invention ensures reliability by regulating the integrated circuit temperature, preventing overheating through a sophisticated power supply system that adjusts based on cooling abilities corresponding to the IC's position on the disk.

Career Highlights

Ichikawa is currently associated with Hitachi, Ltd., where he continues to push the boundaries of technology in data storage solutions. His work not only enhances the performance of magnetic disk devices but also contributes to the overall advancement of information technology, which has become essential in today's digital age.

Collaborations

Throughout his career, Ryoichi Ichikawa has worked alongside esteemed colleagues, including Mikio Tokuyama and Noriaki Okamoto. Their combined expertise has fostered an innovative environment that has led to the successful development of several crucial patents in the sector.

Conclusion

Ryoichi Ichikawa exemplifies the spirit of innovation in the field of magnetic data storage. With his impressive portfolio of patents and collaborative endeavors, he continues to influence the future of technology, paving the way for more efficient and reliable data management systems. His significant contributions are a testament to his dedication and creativity as an inventor.

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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