Shizuoka, Japan

Kunihiko Yamada

This inventor holds 29 USPTO granted patents and 2 published patent applications and 10 EPO patents, primarily in In-Vehicle Communication. Top assignees: Yazaki Corporation, Koito Manufacturing Company, Ltd.. Active years: 1991-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kunihiko Yamada. Retrieved from https://idiyas.com/inventor/kunihiko-yamada-0n2rr2fq

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

Calculating rank
USPTO Granted Patents = 29 

% Patents Active = 96.6

 

Average Co-Inventor Count = 4.5

ph-index = 3

Forward Citations = 52(Granted Patents)


Location History:

  • Susono, JP (2021)
  • Shizuoka, JP (1991 - 2022)
  • Makinohara, JP (2016 - 2022)

Company Filing History:


Years Active: 1991-2025

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Areas of Expertise:
Vehicular Circuit Body
Communication System
In-Vehicle Communication
Noise Filter
Wire Harness
Film Antenna
Integrated Antenna Module
Detection Device
Electric Connection Box
Wired-Wireless Hybrid
Vehicular Lamps
Headlight Assembly
29 patents (USPTO):Explore Patents

Title: Kunihiko Yamada: Innovator in Communication Technologies

Introduction

Kunihiko Yamada is a prominent inventor hailing from Shizuoka, Japan, with an impressive portfolio of 28 patents. His contributions significantly impact communication systems, demonstrating a commitment to innovation and technological advancement.

Latest Patents

Among his latest inventions is a sophisticated communication system designed to enhance efficiency in bus-type communication networks such as CAN. This system features a communication path structured in a loop, integrating trunk lines and a redundant communication path that utilizes a switch and a backup line. In a steady state, the switch is normally off, ensuring that the backup line is disconnected. When a disconnection is detected at any joint connector by a disconnection detection unit, the switch activates, allowing for the use of the redundant path. Additionally, the routing map of a central gateway is automatically updated to prioritize the functional redundant path. Another significant invention by Yamada is an on-vehicle communication system that employs relay devices for path control at various branch points along a wire harness. These relay devices are equipped with failure detection capabilities and routing maps, enabling seamless adjustments in response to failures.

Career Highlights

Kunihiko Yamada has had a distinguished career, having worked for renowned companies such as Yazaki Corporation and Koito Manufacturing Company, Ltd. His experiences in these organizations have undoubtedly contributed to his innovative prowess and the development of groundbreaking technologies.

Collaborations

Throughout his career, Yamada has collaborated with notable coworkers, including Terumitsu Sugimoto and Masahiro Takamatsu. These partnerships have fostered a creative environment, leading to the conception of various successful inventions.

Conclusion

Kunihiko Yamada's achievements and ongoing contributions to the field of communication technologies make him a pivotal figure in innovation. With a solid foundation of patents and collaborative efforts, he continues to push the boundaries of what is possible in communication systems, paving the way for future advancements.

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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