Yokohama, Japan

Mitsuji Ishida

This inventor holds 2 USPTO granted patents. Top assignees: Nitto Chemical Industry Co., Ltd., Nihon Sogo-Bosui Co., Ltd., Nihon Soil Engineering Co., Ltd.. Active years: 1988-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mitsuji Ishida. Retrieved from https://idiyas.com/inventor/mitsuji-ishida

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 5.5

ph-index = 2

Forward Citations = 24(Granted Patents)


Company Filing History:


Years Active: 1988-1992

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2 patents (USPTO):Explore Patents

Title: Mitsuji Ishida: Innovator in Soil Engineering

Introduction

Mitsuji Ishida is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of soil engineering, particularly through his innovative methods and apparatuses aimed at improving soil characteristics. With a total of 2 patents to his name, Ishida's work has garnered attention for its practical applications in enhancing water retention in soil.

Latest Patents

Ishida's latest patents include a "Method of Improving Ground and Apparatus Used Therefor" and a "Grout Impregnation Method." The first patent focuses on enhancing the water retention characteristics of soil by utilizing a water absorption polymer. This method involves forming a water impermeable layer in a subsurface layer of the ground and placing a water absorption polymer layer above it. The apparatus designed for this method includes a drilling function to mix the polymer into the soil effectively.

The second patent, the "Grout Impregnation Method," presents an improved technique for injecting grout into the earth. This method employs an injection tube that allows for the separate supply and mixing of different materials. It features a first pressure-holding valve and a mixing section that ensures the materials are combined under controlled pressure before being impregnated into the ground.

Career Highlights

Throughout his career, Mitsuji Ishida has worked with prominent companies such as Nitto Chemical Industry Co., Ltd. and Nihon Soil Engineering Co., Ltd. His experience in these organizations has contributed to his expertise in soil engineering and innovation.

Collaborations

Ishida has collaborated with several professionals in his field, including Tomohiro Sakurada and Katsuhiko Kurihara. These collaborations have likely enriched his work and led to further advancements in soil engineering techniques.

Conclusion

Mitsuji Ishida's contributions to soil engineering through his innovative patents demonstrate his commitment to improving environmental conditions. His work continues to influence the field and offers practical solutions for enhancing soil characteristics.

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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