Kanagawa, Japan

Ryuji Shirahata

This inventor holds 56 USPTO granted patents, primarily in Magnetic Recording Media (CPC class 4271). Top assignee: Fuji Photo Film Company, Limited. Active years: 1976-1998.


% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 13

Forward Citations = 515(Granted Patents)

Forward Citations (Not Self Cited) = 495(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Odawara, JA (1976 - 1978)
  • Odawara, JP (1978 - 1986)
  • Kanagawa, JP (1983 - 1991)
  • Tokyo, JP (1987 - 1996)
  • Asaka, JP (1998)

Company Filing History:


Years Active: 1976-1998

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Areas of Expertise:
Magnetic Recording Medium
Manufacturing Method
Preparation Process
Magnetic Disk
Irradiation
Deposition
Ultrafine Pattern
Vacuum Evaporating Apparatus
Iron Nitride Layer
Magnetic Recording Material
56 patents (USPTO):Explore Patents

Title: Innovations of Ryuji Shirahata in Image Processing and Magnetic Disk Technology

Introduction

Ryuji Shirahata is a notable inventor based in Kanagawa, Japan, with an impressive portfolio of 56 patents. His work primarily revolves around advancements in image processing and magnetic disk technology, contributing to the fields of electronics and data storage.

Latest Patents

Among his latest innovations is an "Apparatus and method for generating interpolated image data." This invention addresses the need for high-quality frame image data by generating blur-free visuals from field image data. The technology works by alternating image data from odd and even-numbered fields every 1/60 of a second, applying them to dedicated memory systems to detect motion and generate missing pixel data accordingly. Additionally, Shirahata has developed a "Method for producing a magnetic disk," which enhances surface vibration during high-speed rotation while ensuring improved head touch through a two-layer magnetic system on a polymeric substrate.

Career Highlights

Ryuji Shirahata has made significant contributions to the Fuji Photo Film Company, Limited, where he applies his expertise in the development of innovative technologies. His patents have shaped products that enhance imaging technologies, making him a key figure in the advancement of multimedia and storage solutions.

Collaborations

Throughout his career, Shirahata has collaborated closely with esteemed colleagues such as Tatsuji Kitamoto and Masaaki Suzuki. These partnerships have fostered a creative environment that stimulates groundbreaking inventions and research, underlining the importance of teamwork in technological advancements.

Conclusion

Ryuji Shirahata continues to inspire with his innovative approaches to image processing and magnetic disk technology. His extensive patent portfolio and collaborative efforts highlight his commitment to pushing the boundaries of what is possible in technology, ensuring a lasting impact on the industry.

Profile summary based on public USPTO records.
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