Tagajo, Japan

Isao Ishibashi

This inventor holds 1 USPTO granted patent. Top assignee: Sony Corporation. Active years: 1978.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Isao Ishibashi. Retrieved from https://idiyas.com/inventor/isao-ishibashi-nv3pxdu8

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 = 1

Forward Citations = 14(Granted Patents)


Company Filing History:


Years Active: 1978

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1 patent (USPTO):Explore Patents

Title: Isao Ishibashi: Innovator in Magnetic Recording Technology

Introduction

Isao Ishibashi is a notable inventor based in Tagajo, Japan. He has made significant contributions to the field of magnetic recording technology. His innovative methods have paved the way for advancements in the quality and efficiency of magnetic recording mediums.

Latest Patents

Ishibashi holds a patent for a method of treating a magnetic recording medium. This method involves preparing a magnetic recording medium with a very smooth magnetic layer. The process includes coating magnetic paint on a non-magnetic base, which is then passed between calender rolls. These rolls consist of a polyurethane roll and a steel roll heated between approximately 40°C and 200°C. The hardness of the polyurethane roll exceeds approximately 70 in Shore D, and the pressure between the rolls ranges from approximately 50 Kg/cm to 500 Kg/cm. This innovative approach enhances the quality of magnetic recording mediums.

Career Highlights

Ishibashi is associated with Sony Corporation, a leading company in the electronics industry. His work at Sony has allowed him to contribute to cutting-edge technologies in magnetic recording. His expertise and innovative methods have been instrumental in advancing the company's product offerings.

Collaborations

Throughout his career, Ishibashi has collaborated with notable colleagues, including Shigetaka Higuchi and Tatsuo Shimizu. These collaborations have fostered an environment of innovation and creativity, leading to significant advancements in their respective fields.

Conclusion

Isao Ishibashi's contributions to magnetic recording technology exemplify the impact of innovative thinking in the electronics industry. His patented methods continue to influence the development of high-quality magnetic recording mediums.

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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