Kanagawa, Japan

Toshio Kawamata

This inventor holds 30 USPTO granted patents, primarily in Magnetic Recording Technology. Top assignee: Fuji Photo Film Company, Limited. Active years: 1978-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshio Kawamata. Retrieved from https://idiyas.com/inventor/toshio-kawamata

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 = 2.7

ph-index = 10

Forward Citations = 304(Granted Patents)


Location History:

  • Tokyo, JA (1978)
  • Odawara, JP (1985 - 1991)
  • Kanagawa, JP (1985 - 2001)

Company Filing History:


Years Active: 1978-2001

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Areas of Expertise:
Magnetic Tape
Magnetic Recording Medium
Flexible Disk
Magnetic Disk
Production Process
Data Storage
Surface Smoothing
Laminated Plastic Cards
Electrophotographic Film
Non-Magnetic Underlayer
Magnetic Powder
Ester Lubricant
30 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Toshio Kawamata

Introduction: Toshio Kawamata, an accomplished inventor based in Kanagawa, Japan, holds an impressive portfolio of 30 patents. His work primarily focuses on advancements in magnetic recording technologies, which have significant implications for data storage and transmission.

Latest Patents: Among his latest innovations, Kawamata has developed two notable patents. The first is a magnetic tape designed for recording computer data, featuring a unique structure where a non-magnetic layer composed of a powder and binder is positioned on one side of a support, while a magnetic layer formed from ferromagnetic powder and binder is superposed on the opposite side. This design includes a back-coating layer containing carbon black to enhance performance. The magnetic layer boasts a thickness range of 0.08 to 0.28 µm and a magnetic flux of 0.02 to 0.1 G·cm.

The second patent is for a magnetic recording medium that incorporates an aromatic polyamide support. This inventive medium includes a magnetic recording layer and a specially formulated back-coating layer on opposite surfaces to improve running durability. The back-coating layer is made from solid particles and a binder, along with a subbing layer of polyester or polyurethane resin that exhibits specific thermal and polar properties.

Career Highlights: Kawamata's innovation journey has been primarily through his work at Fuji Photo Film Company, Limited, where he has significantly contributed to the field of magnetic recording technology. His patents demonstrate a strong commitment to improving data storage mechanisms, ensuring that his inventions meet the evolving needs of the digital age.

Collaborations: Throughout his career, Kawamata has collaborated with esteemed colleagues, including Yasushi Endo and Satoru Hayakawa. These partnerships have fueled creativity and fostered the development of cutting-edge technologies. Their combined expertise has undoubtedly enhanced the trajectory of their respective projects.

Conclusion: Toshio Kawamata's contributions to the field of magnetic recording technology have marked him as a key figure in innovation. With a rich history of patents and collaborative efforts, his work continues to influence advancements in data storage solutions, paving the way for future developments in the industry.

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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