Mito, Japan

Izumi Sankawa

This inventor holds 6 USPTO granted patents and 1 EPO patent. Top assignees: Nippon Telegraph and Telephone Corporation, Sumitomo Electric Industries, Limited, The Furukawa Electric Co., Ltd.. Active years: 1993-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Izumi Sankawa. Retrieved from https://idiyas.com/inventor/izumi-sankawa

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 = 4.3

ph-index = 4

Forward Citations = 90(Granted Patents)


Location History:

  • Ibaraki, JP (1993)
  • Mito, JP (1995)
  • Setagaya, JP (1995)
  • Tokyo, JP (1995)
  • Kawasaki, JP (2007)

Company Filing History:


Years Active: 1993-2007

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6 patents (USPTO):Explore Patents

Title: Izumi Sankawa: Innovator in Optical Communication

Introduction

Izumi Sankawa is a prominent inventor based in Mito, Japan. She has made significant contributions to the field of optical communication, holding a total of 6 patents. Her work focuses on enhancing the efficiency and capacity of optical fibers, which are crucial for modern communication systems.

Latest Patents

One of her latest patents is for a hole-assisted single mode optical fiber. This innovation is designed to support high-speed, large-capacity optical communication and optical wiring. The single mode fiber features a first cladding region with a uniform refractive index, a core region with a higher refractive index, and a second cladding region that includes at least four air hole regions. The optimization of this fiber can be achieved by adjusting the distance from the center of the core region to the air hole regions and ensuring the air hole radius is appropriately sized. Another notable patent involves an optical switch that comprises a fiber arranging member with a substrate featuring multiple fiber fixing grooves. This invention facilitates the connection of optical fibers, enhancing the efficiency of optical communication systems.

Career Highlights

Izumi Sankawa has worked with notable companies such as Nippon Telegraph and Telephone Corporation and Sumitomo Electric Industries, Limited. Her experience in these organizations has contributed to her expertise in optical technologies and innovations.

Collaborations

Throughout her career, she has collaborated with esteemed colleagues, including Kazuhide Nakajima and Katsusuke Tajima. These partnerships have fostered advancements in optical communication technologies.

Conclusion

Izumi Sankawa's contributions to optical communication through her innovative patents and collaborations highlight her role as a key figure in the field. Her work continues to influence the development of efficient communication systems.

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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