Kawasaki, Japan

Kazuyuki Tajima

This inventor holds 46 USPTO granted patents and 12 published patent applications, plus 3 CIPO patents, primarily in Optical Network Design. Top assignees: Fujitsu Corporation, Nippon Telegraph and Telephone Corporation. Active years: 1993-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuyuki Tajima. Retrieved from https://idiyas.com/inventor/kazuyuki-tajima

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

USPTO Granted Patents = 46 

% Patents Active = 41.3


Average Co-Inventor Count = 3.5

ph-index = 8

Forward Citations = 201(Granted Patents)


Location History:

  • Kanagawa, JP (2003)
  • Kawasaki, JP (1993 - 2015)
  • Yokosuka, JP (2015 - 2023)

Company Filing History:


Years Active: 1993-2025

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Areas of Expertise:
Optical Fiber
Transmission Line
Wavelength Division Multiplexing
Network Design
Dispersion Compensation
Optical Transmitter
Monitoring Device
Signal Paths
Chromatic Dispersion
Resource Reservation
Network Topology
Design Method
46 patents (USPTO):Explore Patents

Title: Innovations and Contributions of Kazuyuki Tajima in Optical Technology

Introduction

Kazuyuki Tajima, located in Kawasaki, Japan, is a prolific inventor whose impressive portfolio includes a total of 45 patents. His work primarily focuses on advancements in optical technology, contributing significantly to the fields of optical networking and signal processing.

Latest Patents

Two of Tajima's latest patents exemplify his innovative spirit. The first patent, titled "Optical Network Device and Method for Monitoring Transmission Line," details an optical network device that includes a receiver for polarization multiplexed optical signals and a processor that cleverly separates the electric field information signal into orthogonal polarization components. This invention enhances the monitoring of transmission lines by calculating evaluation values and variations to detect positions for accurate assessment.

The second patent, "Optical Transmitter and Control Method for Optical Transmitter," introduces an advanced optical transmitter incorporating a modulator and a square law detector. This technological advancement allows for precise generation and detection of optical signals, enabling the control of the modulator's state to minimize discrepancies between detected intensities.

Career Highlights

Kazuyuki Tajima has collaborated with leading organizations such as Fujitsu Corporation and Nippon Telegraph and Telephone Corporation, where his contributions have been fundamental to the evolution of optical systems. His career showcases a consistent drive toward innovation and excellence in the optical technology sector.

Collaborations

Throughout his career, Tajima has worked alongside notable colleagues, including Tomohiro Hashiguchi and Yutaka Takita. This collaborative environment has fostered the breeding ground for many inventive solutions in optical technology.

Conclusion

Kazuyuki Tajima's contributions through his patents reflect significant strides in optical technology. His ongoing dedication to innovation continues to influence the industry, making him a key figure in the realm of optical networking and signal processing. As technology evolves, Tajima's work stands as a testament to the importance of research and innovation in improving 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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