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For the Inventor, By the Inventor

Tokyo, Japan

Katsumi Emura

This inventor holds 8 USPTO granted patents, plus 1 CIPO patent. Top assignee: Nec Corporation. Active years: 1987-1998.

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

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

USPTO Granted Patents = 8

% Patents Active = 100.0


Average Co-Inventor Count = 1.8

ph-index = 7

Forward Citations = 388(Granted Patents)


Company Filing History:

goldMedal8 out of 36,718 
 
Nec Corporation
 patents

Years Active: 1987-1998

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8 patents (USPTO):Explore Patents
1. 5751455 - Optical transmission system and optical network terminals used therein (1998-05-12),
2. 5615036 - Optical network comprising node groups and an analog repeater node unit (1997-03-25),
3. 5424864 - Microcellular mobile communication system (1995-06-13),
4. 5400391 - Mobile communication system (1995-03-21),
5. 5327276 - Optical local area network system and node apparatus used in the same (1994-07-05),
6. 5325382 - Method and electrode arrangement for inducing flat frequency modulation (1994-06-28),
7. 4759080 - Coherent optical communication system with FSK heterodyne or homodyne (1988-07-19),
8. 4706300 - Optical heterodyne detection pulse receiving system and method (1987-11-10),

Title: Innovations of Katsumi Emura in Optical Transmission Systems

Introduction

Katsumi Emura is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical transmission systems, holding a total of 8 patents. His work focuses on enhancing the efficiency and reliability of optical networks, which are crucial for modern communication systems.

Latest Patents

Emura's latest patents include an innovative optical transmission system and optical network terminals used therein. This system is designed to eliminate deterioration caused by beat noise between signals. By cascading multiple optical modulators in an optical fiber transmission path, he enables light receivers to receive a radio frequency signal with frequency-multiplexed carrier waves. This design ensures that only the signal beam is received, preventing beat noise from occurring. Additionally, his optical network comprises node groups and an analog repeater node unit, which efficiently manages the transmission of signals across various wavelengths, further enhancing the performance of optical networks.

Career Highlights

Katsumi Emura has built a successful career at NEC Corporation, where he has been instrumental in developing cutting-edge technologies in optical communications. His expertise in this field has led to numerous advancements that benefit both the company and the broader telecommunications industry.

Collaborations

Emura has collaborated with notable colleagues, including Makoto Shibutani and Minoru Shikada. Their combined efforts have contributed to the development of innovative solutions in optical transmission systems.

Conclusion

Katsumi Emura's work in optical transmission systems exemplifies the impact of innovation in telecommunications. His patents and contributions continue to shape the future of optical networks, ensuring more efficient and reliable 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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