Kawasaki, Japan

Keizo Sakamoto

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Fujitsu Corporation. Active years: 1993-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keizo Sakamoto. Retrieved from https://idiyas.com/inventor/keizo-sakamoto

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 2 

% Patents Active = 50.0

Average Co-Inventor Count = 2.4

ph-index = 1

Forward Citations = 11(Granted Patents)


Location History:

  • Kanagawa, JP (1993)
  • Kawasaki, JP (2003)

Company Filing History:


Years Active: 1993-2003

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2 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Keizo Sakamoto

Introduction

Keizo Sakamoto, a distinguished inventor based in Kawasaki, Japan, has made noteworthy contributions to the field of optical technologies and signal processing. With two patents to his name, he has been instrumental in advancing the capabilities of modem systems and optical components.

Latest Patents

Sakamoto's latest patents include an innovative Optical Multiplexer/Demultiplexer Module. This module features a first ferrule assembly with a sleeve and inserted ferrule that accommodates multiple optical fibers. It incorporates essential elements such as a lens and a bandpass filter, along with a wedge plate for optical path correction made of glass. This design emphasizes performance and reliability in optical communication systems.

Another significant patent is related to a Modem Signal Detecting System for Adaptive Differential PCM CODEC. This system focuses on detecting modem training signals and includes a comparison and decision circuit. The circuit evaluates the power levels during silent and training periods, ensuring that modem communication maintains high transmission quality.

Career Highlights

Keizo Sakamoto works at Fujitsu Corporation, where his expertise in optical technologies and signal processing is recognized. His role at the company allows him to collaborate with cutting-edge teams and contribute to industry-leading innovations.

Collaborations

Throughout his career, Sakamoto has had the opportunity to work alongside talented professionals, including Yoshihiro Tomita and Hironori Orihara. These collaborations have fostered an environment of creativity and innovation, enabling the development of advanced technologies that enhance communication systems.

Conclusion

In sum, Keizo Sakamoto stands out as a prominent inventor whose work has significantly influenced optical and signal processing technologies. His patents not only showcase innovative solutions but also reflect his commitment to advancing the field, making him a key figure 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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