Ichikawa, Japan

Katsumi Kikawa

This inventor holds 3 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1992-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Kikawa. Retrieved from https://idiyas.com/inventor/katsumi-kikawa

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 = 2.5

ph-index = 3

Forward Citations = 51(Granted Patents)


Company Filing History:


Years Active: 1992-1994

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3 patents (USPTO):Explore Patents

Title: Katsumi Kikawa: Innovator in Optical Technology

Introduction

Katsumi Kikawa is a prominent inventor based in Ichikawa, Japan. He has made significant contributions to the field of optical technology, particularly in the development of optical repeaters. With a total of 3 patents to his name, Kikawa's work has advanced the efficiency and functionality of transmission systems.

Latest Patents

Kikawa's latest patents include an innovative optical repeater that features a loop-back function used in transmission systems. This optical repeater is designed to include a first optical amplifier connected to the first transmission line and a second optical amplifier connected to the second transmission line. The device also incorporates a loop-back unit and a control unit that manages the loop-back operation. This design allows for direct amplification of optical signals without conversion to electrical signals, ensuring that loop-back signals and optical signals remain separate, thus enhancing the reliability of the system.

Another notable patent is the optical repeater OFF-state supervisory method and device. This method involves converting an input optical signal into an electrical signal and monitoring its level. It effectively detects whether the input optical signal is in an OFF state and adjusts the monitored value accordingly. This innovation contributes to improved monitoring and management of optical repeaters.

Career Highlights

Katsumi Kikawa is associated with Fujitsu Corporation, where he has been instrumental in advancing optical technologies. His work has not only contributed to the company's portfolio but has also positioned Fujitsu as a leader in the optical transmission field.

Collaborations

Kikawa has collaborated with notable colleagues such as Mitsuo Kitamura and Masaaki Takahashi. Their combined expertise has fostered innovation and development in optical technologies.

Conclusion

Katsumi Kikawa's contributions to optical technology through his patents and work at Fujitsu Corporation highlight his role as a key innovator in the field. His advancements in optical repeaters are paving the way for more efficient transmission 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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