Tokyo, Japan

Shigetaka Tsubouchi

This inventor holds 5 USPTO granted patents and 4 published patent applications and 2 EPO patents. Top assignees: Hitachi, Ltd., Hitachi Industrial Equipment Systems Co., Ltd.. Active years: 2022-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigetaka Tsubouchi. Retrieved from https://idiyas.com/inventor/shigetaka-tsubouchi

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

USPTO Granted Patents = 5 

% Patents Active = 100.0

 

Average Co-Inventor Count = 4.8

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 2022-2024

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5 patents (USPTO):Explore Patents

Title: Shigetaka Tsubouchi: Innovator in Temperature Detection Technologies

Introduction

Shigetaka Tsubouchi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of temperature detection technologies, holding a total of five patents. His innovative work focuses on developing materials and methods that enhance temperature sensing capabilities.

Latest Patents

Tsubouchi's latest patents include groundbreaking inventions such as temperature detection ink, a temperature detection ink initialization method, a temperature indicator, and an article management system. The temperature detection ink allows for color initialization through a simple method and discolors with the addition of time and temperature at a reaction temperature or higher. This invention incorporates a temperature detection material and a solvent, where the temperature detection material consists of a thermosensitive material containing a leuco dye, a color-developing agent, and a decolorant encapsulated in microcapsules. The thermosensitive material solidifies while being decolored by cooling from a molten state to a glass transition temperature or lower at a predetermined rate or higher.

Another notable invention is the temperature sensing material that changes color density continuously with the passage of time at a predetermined temperature. This material features a structure that disperses a temperature indicating material that changes color by crystallization in a dispersion medium. The average particle size of the temperature indicating material is designed to be not larger than the resolution when observed, with a volume fraction of the temperature indicating material to the temperature sensing material ranging from 5% to less than 90%.

Career Highlights

Throughout his career, Tsubouchi has worked with notable companies such as Hitachi, Ltd. and Hitachi Industrial Equipment Systems Co., Ltd. His experience in these organizations has contributed to his expertise in developing advanced technologies in temperature detection.

Collaborations

Tsubouchi has collaborated with esteemed colleagues, including Masahiro Kawasaki and Kohhei Aida. Their combined efforts have furthered the development of innovative solutions in the field.

Conclusion

Shigetaka Tsubouchi is a distinguished inventor whose work in temperature detection technologies has led to significant advancements. His patents reflect a commitment to innovation and problem-solving in this critical area.

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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