Tokyo, Japan

Katsuyuki Natsukawa

This inventor holds 1 USPTO granted patent and 3 published patent applications. Top assignee: Ntt Corporation. Active years: 2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuyuki Natsukawa. Retrieved from https://idiyas.com/inventor/katsuyuki-natsukawa

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

Calculating rank
USPTO Granted Patents = 1 

% Patents Active = 100.0

Average Co-Inventor Count = 8.0

ph-index = 1


Company Filing History:


Years Active: 2026

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1 patent (USPTO):Explore Patents

Title: Katsuyuki Natsukawa: Innovator in Quantum Key Distribution

Introduction

Katsuyuki Natsukawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of quantum key distribution, which is essential for secure communication in the digital age. His innovative work has led to the development of advanced technologies that enhance data security.

Latest Patents

Natsukawa holds a patent for a key exchange system, hub apparatus, QKD apparatus, method, and program. This key exchange system includes a plurality of quantum key distribution (QKD) apparatuses that execute a quantum key distribution protocol, which incorporates error correction. The system also features multiple hub apparatuses that perform encrypted communication with each other. Each hub apparatus is equipped with a key generation unit that generates an encryption key based on information received from the corresponding QKD apparatus. The QKD apparatuses include a QKD processing unit that executes the quantum key distribution protocol and generates a correction key from a ciphertext of random number information. Additionally, a first transmission unit transmits information representing the result of basis reconciliation in the quantum key distribution protocol to the corresponding hub apparatus.

Career Highlights

Katsuyuki Natsukawa is currently associated with NTT Corporation, a leading telecommunications company in Japan. His work at NTT Corporation has allowed him to collaborate with other talented professionals in the field of quantum technology.

Collaborations

Some of his notable coworkers include Yutaro Kiyomura and Sakae Chikara. Their collective efforts contribute to the advancement of quantum key distribution technologies.

Conclusion

Katsuyuki Natsukawa is a key figure in the realm of quantum key distribution, with a focus on enhancing secure communication systems. His innovative patent and collaboration with esteemed colleagues highlight his commitment to advancing technology in this critical area.

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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