Masaki Umayabashi

This inventor holds 23 USPTO granted patents and 3 published patent applications and 3 EPO patents, primarily in Network Communication Systems. Top assignee: Nec Corporation. Active years: 2003-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaki Umayabashi. Retrieved from https://idiyas.com/inventor/masaki-umayabashi

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

USPTO Granted Patents = 23 (Patent Applications = 3)

% Patents Active = 30.4

EPO Patents = 3 (Patent Applications = 2)

Average Co-Inventor Count = 2.4

ph-index = 6

Forward Citations = 144(Granted Patents)

Company Filing History:

23 out of 36,684

Nec Corporation

patents

Years Active: 2003-2016

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Areas of Expertise:

Diagnostic System

Delay Measurement

Packet Loss Ratio

Congestion Detection

Clock Synchronization

Frame Transfer

Spanning Tree Configuration

Bandwidth Allocation

Time Slot Assignment

Packet Communication

Network Management

Data Transfer Control

23 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9369359 - Diagnostic system (2016-06-14),

2. 9300558 - Delay measurement system and delay measurement method, as well as delay measurement device and delay measurement program (2016-03-29),

3. 9264332 - Transmission system, transmission device, packet loss ratio measurement method, and packet loss ratio measurement program (2016-02-16),

4. 8897308 - Node, a monitoring management method used for a node, and a transfer system, an input circuit and an output circuit (2014-11-25),

5. 8737238 - Congestion detecting method and communication node (2014-05-27),

6. 8731036 - Packet filter-based clock synchronization system, apparatus, and method, and program thereof (2014-05-20),

7. 8711686 - Packet transmission system and fault recovery method (2014-04-29),

8. 8675665 - Clock synchronization system, its method and program (2014-03-18),

9. 8565124 - Node, network, correspondence relationship generation method and frame transfer program (2013-10-22),

10. 8218446 - Frame transfer route confirmation method, node, frame transfer route confirmation program and frame transfer route confirmation system (2012-07-10),

11. 8094584 - Node, network system, frame transfer method, and frame transfer program (2012-01-10),

12. 7894374 - Network system, spanning tree configuration method, spanning tree configuration node, and spanning tree configuration program (2011-02-22),

13. 7855981 - Network system, spanning tree configuration method, spanning tree configuration node, and spanning tree configuration program (2010-12-21),

14. 7783705 - Frame transfer method and node in Ethernet (2010-08-24),

15. 7646789 - Communication system including several communication terminals and server, its communication terminal, its server and data transfer control program (2010-01-12),

Title: Innovations and Achievements of Masaki Umayabashi in Tokyo

Introduction: Masaki Umayabashi is a prominent inventor based in Tokyo, Japan, known for his significant contributions to technology through his 23 patents. His innovative work focuses primarily on diagnostic systems and delay measurement methodologies, which have practical applications in networking and communication.

Latest Patents: Among his latest inventions is a diagnostic system that enables a transmission source node to send diagnostic frames with a Time To Live (TTL) value indicating the number of hops counted until it reaches an intermediate node. This system allows a relay node to decrement the TTL value of the received frames, enabling it to count how many diagnostic frames have a TTL value of zero, thereby recognizing the continuity between the transmission source and the relay node.

Another noteworthy invention by Umayabashi is the delay measurement system and method, which accurately measures one-way delay without the need for synchronizing all nodes with special functionalities. This system consists of a transmission origin node and a destination node, connected through a network involving relay nodes. The transmission origin node generates a clock that facilitates the regular transmission of delay measurement packets. The destination node then selects and measures the packet delays in the network, allowing for effective delay measurements.

Career Highlights: Masaki Umayabashi has built a reputable career at NEC Corporation, where he has been instrumental in driving innovation and research in communication technologies. His commitment to developing practical solutions has solidified his status as a leading figure in his field.

Collaborations: Throughout his career, Umayabashi has collaborated with talented colleagues such as Kazuo Takagi and Atsushi Iwata. Their collective expertise has contributed significantly to their projects and has fostered an ecosystem of innovation within their company.

Conclusion: Masaki Umayabashi's contributions through his numerous patents highlight his innovative spirit and dedication to enhancing technology. His work continues to influence the fields of communication and networking, proving the vital role of inventors in shaping the future of technology.

Profile summary based on public USPTO records.