Osaka, Japan

Toshiyuki Amagai, Deceased

This inventor holds 1 USPTO granted patent. Top assignee: Sumitomo Electric Industries, Limited. Active years: 1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiyuki Amagai, Deceased. Retrieved from https://idiyas.com/inventor/toshiyuki-amagai-deceased

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 = 5.0

ph-index = 1

Forward Citations = 7(Granted Patents)


Company Filing History:


Years Active: 1994

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1 patent (USPTO):Explore Patents

Title: The Innovations of Toshiyuki Amagai

Introduction

Toshiyuki Amagai was a notable inventor from Osaka, Japan, recognized for his contributions to optical-fiber technology. His innovative work has left a lasting impact on the field, particularly in the development of subaqueous units that incorporate optical fibers.

Latest Patents

Amagai held a patent for an "Optical-fiber cable incorporated longer-sized subaqueous unit." This invention comprises optical fiber units arranged inside or outside a plastic sheath surrounding the core body of longer-sized subaqueous units, such as power cable cores or water supply tubes. Each optical fiber unit includes an optical fiber housed in a metal pipe, which is coated with a plastic material that has a higher melting point than that of the plastic sheath. Additionally, armoring iron wire bundles are provided outside the plastic sheath to prevent any buckling in the optical fiber units. This innovative design enhances the durability and functionality of optical-fiber cables in various applications.

Career Highlights

Amagai was associated with Sumitomo Electric Industries, Limited, where he contributed significantly to advancements in optical-fiber technology. His work has been instrumental in improving the reliability and efficiency of communication systems.

Collaborations

Throughout his career, Amagai collaborated with notable colleagues, including Ryosuke Hata and Masayuki Hirose. Their combined efforts in research and development have furthered the field of optical-fiber technology.

Conclusion

Toshiyuki Amagai's contributions to optical-fiber technology have made a significant impact on the industry. His innovative patent and collaborations with esteemed colleagues reflect his dedication to advancing technology. His legacy continues to influence the field today.

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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