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For the Inventor, By the Inventor

Kawasaki, Japan

Kenichi Kawarai

This inventor holds 19 USPTO granted patents. Top assignees: Fujitsu Corporation, Fujitsu Telecom Networks Limited. Active years: 2000-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenichi Kawarai. Retrieved from https://idiyas.com/inventor/kenichi-kawarai

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

USPTO Granted Patents = 19

% Patents Active = 26.3

Average Co-Inventor Count = 4.2

ph-index = 9

Forward Citations = 295(Granted Patents)


Location History:

  • Yokohama, JP (2009)
  • Kawasaki, JP (2004 - 2012)
  • Kanagawa, JP (2000 - 2015)

Company Filing History:

goldMedal18 out of 39,371 
 
Fujitsu Corporation
 patents
silverMedal1 out of 42 
 
Fujitsu Telecom Networks Limited
 patents

Years Active: 2000-2015

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19 patents (USPTO):Explore Patents
1. 9166815 - Communication apparatus and communication controlling method in ring network (2015-10-20),
2. 8199639 - Path protection method and layer-2 switch (2012-06-12),
3. 8027262 - Method and apparatus for keeping track of virtual LAN topology in network of nodes (2011-09-27),
4. 7957267 - Fault detection device (2011-06-07),
5. 7636299 - Packet repeater (2009-12-22),
6. 7440397 - Protection that automatic and speedily restore of Ethernet ring network (2008-10-21),
7. 7366165 - Input line interface device and packet communication device (2008-04-29),
8. 7304946 - Packet multiplexing control method and a concentrator using the same (2007-12-04),
9. 7227861 - Packet switch device (2007-06-05),
10. 7058751 - Packet switch (2006-06-06),
11. 7046685 - Scheduling control system and switch (2006-05-16),
12. 7023865 - Packet switch (2006-04-04),
13. 7016366 - Packet switch that converts variable length packets to fixed length packets and uses fewer QOS categories in the input queues that in the outout queues (2006-03-21),
14. 6963577 - Packet Switch (2005-11-08),
15. 6920145 - Packet switch device and scheduling control method (2005-07-19),

Title: Kenichi Kawarai - Innovator in Communication Technology

Introduction

Kenichi Kawarai, based in Kawasaki, Japan, is a prolific inventor renowned for his contributions to communication technology. With a remarkable portfolio of 19 patents, Kawarai's work has significantly advanced the efficiency and reliability of network communications.

Latest Patents

Among his latest inventions is a patent for a *Communication apparatus and communication controlling method in a ring network*. This innovative apparatus comprises a frame receiver that collects frames from multiple networks and a frame transmitter responsible for managing the flow of these frames within one specific ring network, thereby optimizing communication efficiency.

Another notable patent is related to the *Path protection method and layer-2 switch*. This method delineates how to establish a working path and a protection path within a virtual network, enhancing the reliability and continuity of data transmission by seamlessly switching between paths as needed.

Career Highlights

Kawarai has had a distinguished career, contributing his expertise to organizations such as Fujitsu Corporation and Fujitsu Telecom Networks Limited. His role in these companies has allowed him to innovate at the forefront of communication technology and develop solutions that cater to the evolving demands of network infrastructures.

Collaborations

Throughout his career, Kawarai has collaborated with esteemed colleagues, including Hiroshi Tomonaga and Naoki Matsuoka. This collaboration has fostered an environment of shared ideas and innovation, contributing to the development of cutting-edge communication technologies.

Conclusion

Kenichi Kawarai’s contributions to communication technologies underscore his role as a vital inventor in the field. His patents continue to influence modern network systems, ensuring efficient communication across various platforms. As technology advances, innovations like those of Kawarai will remain pivotal in shaping the future of connectivity.

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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