Tokyo, Japan

Katsuyuki Yamaguchi

This inventor holds 7 USPTO granted patents and 2 EPO patents. Top assignees: Citizen Holdings Company, Ltd., Citizen Watch Company, Ltd., Citizen Seimitus Co., Ltd.. Active years: 2002-2014.

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

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


% Patents Active = 71.4


Average Co-Inventor Count = 4.1

ph-index = 4

Forward Citations = 78(Granted Patents)


Location History:

  • Nishitokyo, JP (2003 - 2007)
  • Itabashi-ku, JP (2013)
  • Tokyo, JP (2002 - 2014)

Company Filing History:


Years Active: 2002-2014

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7 patents (USPTO):Explore Patents

Title: Innovations of Katsuyuki Yamaguchi

Introduction

Katsuyuki Yamaguchi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of display technology, holding a total of 7 patents. His work focuses on enhancing the functionality and aesthetic appeal of instrument display boards and related technologies.

Latest Patents

One of Yamaguchi's latest patents is for an instrument display board and the process for producing it. This innovative display board eliminates the need for multiple plate members, allowing for a wide variety of designs. It presents a stereoscopic feeling and a high-class appearance, featuring unprecedented color tone variations and metallic textures. The design enhances merchantability due to its excellent appearance quality. Another notable patent involves a display panel equipped with a solar cell and a light-transmitting substrate, which incorporates a reflective polarizing plate with an uneven pattern. This design improves light reflection and transmission, further advancing display technology.

Career Highlights

Throughout his career, Yamaguchi has worked with notable companies such as Citizen Watch Company, Ltd. and Citizen Holdings Company, Ltd. His experience in these organizations has contributed to his expertise in developing innovative display technologies.

Collaborations

Yamaguchi has collaborated with esteemed colleagues, including Nobuo Ito and Hiroshi Ikebuchi. Their combined efforts have led to advancements in the field of display technology.

Conclusion

Katsuyuki Yamaguchi's contributions to display technology through his patents and collaborations highlight his innovative spirit and dedication to enhancing product design and functionality. His work continues to influence the industry and inspire future innovations.

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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