Tokyo, Japan

Toyoji Koinuma

This inventor holds 2 USPTO granted patents. Top assignee: Nissan Chemical Industries Limited. Active years: 1984-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toyoji Koinuma. Retrieved from https://idiyas.com/inventor/toyoji-koinuma

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


% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 2

Forward Citations = 30(Granted Patents)


Company Filing History:


Years Active: 1984-1985

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2 patents (USPTO):Explore Patents

Title: Toyoji Koinuma: Innovator in Cement Modification Technologies

Introduction

Toyoji Koinuma is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of cement technology, particularly in the development of agents that enhance the properties of cement structures. With a total of 2 patents to his name, Koinuma's work focuses on improving the durability and performance of cement materials.

Latest Patents

Koinuma's latest patents include innovative solutions for modifying cement surfaces. The first patent is titled "Silicate containing agent and cement surface modified with said agent." This invention describes an agent and method for modifying the surface layer of hardened cement structures using a specific ratio of an alkali silicate solution and a sodium naphthalenesulfonate-formaldehyde condensate. The agent demonstrates excellent stability and remarkable permeability into the cement structure, resulting in a deeper strengthened surface layer. The second patent, "Agent and method for modifying surface layer of cement structures," shares similar principles and highlights the effectiveness of the agent in enhancing cement properties.

Career Highlights

Koinuma is currently employed at Nissan Chemical Industries Limited, where he continues to innovate in the field of chemical engineering. His work at the company has allowed him to explore new methodologies and applications for cement modification, contributing to advancements in construction materials.

Collaborations

Throughout his career, Koinuma has collaborated with esteemed colleagues such as Masamichi Obitsu and Takahiro Hori. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and the development of cutting-edge technologies.

Conclusion

Toyoji Koinuma's contributions to cement technology through his innovative patents have positioned him as a key figure in the industry. His work not only enhances the performance of cement structures but also paves the way for future advancements in construction materials.

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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