Tokyo, Japan

Hitoshi Takeshita

USPTO Granted Patents = 45 

Average Co-Inventor Count = 2.9

ph-index = 8

Forward Citations = 222(Granted Patents)


Location History:

  • Minato-ku, JP (2012)
  • Tokyo, JP (2000 - 2024)

Company Filing History:


Years Active: 2000-2025

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Areas of Expertise:
Optical Amplification
Optical Network Management
Multi-Layer Network
Optical Path Control
Optical Communication Systems
DPSK Modulation
Optical Signal Monitoring
Optical Transmission Systems
Optical Node Devices
Optical Add-Drop Multiplexer
Submarine Optical Communication
Optical Frequency Band Allocation
45 patents (USPTO):Explore Patents

Title: Innovations of Hitoshi Takeshita: A Pioneer in Optical Network Technology

Introduction

Hitoshi Takeshita is a notable inventor based in Tokyo, Japan, who has made significant contributions to the field of optical network technology. With an impressive portfolio of 41 patents, he has been instrumental in developing advanced solutions that enhance the efficiency and reliability of optical networks.

Latest Patents

Among his latest innovations are three pivotal inventions: an optical network system, an optical node device, and an optical network control method. The optical network control method addresses a critical issue: when wavelength defragmentation occurs during the operation of an optical network, it can lead to instantaneous interruptions and data loss. To mitigate this, Takeshita's method involves monitoring the data volume of client signals transmitted through multiple optical subcarriers. By synchronously altering active optical subcarriers based on variations in data volume and remapping the client signals onto these carriers, data integrity is preserved.

Furthermore, his multi-layer network system and path setting method in a multi-layer network aim to enhance network efficiency and reliability. This system features a first network manager that establishes logical paths in the upper network layer and a second network manager that sets corresponding physical paths in the lower layer. By incorporating detailed physical network information, the first network manager can optimize logical routing based on real-time data.

Career Highlights

Hitoshi Takeshita has built an impressive career at NEC Corporation, where he applies his expertise to revolutionize optical networking. His work has not only earned him numerous patents but has also significantly impacted the telecommunications industry.

Collaborations

Throughout his career, Takeshita has collaborated with esteemed colleagues, including Shinsuke Fujisawa and Akio Tajima. Their combined efforts have fostered innovation within NEC Corporation, further propelling advancements in network technologies.

Conclusion

Hitoshi Takeshita exemplifies the spirit of innovation within the optical networking realm. His groundbreaking patents address critical challenges and foster continued advancements in technology, marking him as a leading figure in his field. As optical networks evolve, Takeshita's contributions will undoubtedly inspire future innovations that enhance global connectivity.

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