Tokyo, Japan

Yuki Kawaguchi

This inventor holds 69 USPTO granted patents and 36 published patent applications and 17 EPO patents, primarily in Optical Fiber Technology. Top assignees: Sumitomo Electric Industries, Limited, Olympus Corporation, Toshiba Tec Kabushiki Kaisha. Active years: 1995-2026.

USPTO Granted Patents = 69 

% Patents Active = 92.8

 

Average Co-Inventor Count = 3.3

ph-index = 4

Forward Citations = 353(Granted Patents)

Forward Citations (Not Self Cited) = 334(Dec 10, 2025)


Location History:

  • Shizuoka-ken, JP (2014)
  • Hachioji, JP (2014 - 2017)
  • Yokohama, JP (2016 - 2018)
  • Kanagawa, JP (1995 - 2022)
  • Koshu, JP (2017 - 2023)
  • Tokyo, JP (2013 - 2024)
  • Tagata Shizuoka, JP (2019 - 2024)
  • Osaka, JP (2020 - 2024)

Company Filing History:


Years Active: 1995-2026

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Areas of Expertise:
Optical Fiber
Treatment Tool
Power Conversion Device
Surgical Instrument
Vibration Damping Material
Bending Loss Measurement
Merchandise Registration
Imaging Device
Energy Treatment Tool
Control Parameter Calculation
Self-Service Data Processing
Optical Transmission System
69 patents (USPTO):Explore Patents

Title: The Innovative Journey of Yuki Kawaguchi

Introduction

Yuki Kawaguchi, an esteemed inventor based in Tokyo, Japan, has made significant contributions to the fields of power conversion and vibration damping. With an impressive portfolio of 12 patents, Kawaguchi has showcased his expertise in creating solutions that enhance efficiency and reduce vibration in various applications.

Latest Patents

Among his latest patents, Kawaguchi has developed a power conversion device and a press apparatus designed to prevent excessive current in a DC-link capacitor. This innovative power conversion device features a voltage-doubling rectifier circuit that operates in a voltage-doubling rectification mode. A current detector circuit plays a crucial role by monitoring the switching current and load current to ensure optimal performance.

Additionally, Kawaguchi has introduced a breakthrough vibration damping material intended for use in motor mounts. This material is composed of a gel made from the dehydration condensation reaction product of silicone oil and boric acid, with a specific ratio that enhances its damping capabilities.

Career Highlights

Throughout his career, Yuki Kawaguchi has collaborated with prominent companies, including Hitachi, Ltd. and Sony Corporation. His experience in these influential organizations has allowed him to refine his innovative skills and contribute to cutting-edge technologies.

Collaborations

Kawaguchi has also had the privilege of working alongside talented colleagues, including Takae Shimada and Yasuaki Norimatsu. These collaborations have greatly enriched his perspectives and fostered a vibrant exchange of ideas, driving further innovations in his work.

Conclusion

Yuki Kawaguchi's remarkable journey as an inventor embodies the spirit of innovation. His contributions to the fields of power conversion and vibration damping continue to influence advancements in technology. With each patent, Kawaguchi not only showcases his creativity but also his commitment to developing practical solutions that address complex challenges.

Profile summary based on public USPTO records.
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