Ichihara, Japan

Tohru Yamada

This inventor holds 2 USPTO granted patents. Top assignee: Mitsui Petrochemical Industries, Ltd.. Active years: 1990-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tohru Yamada. Retrieved from https://idiyas.com/inventor/tohru-yamada-r406m0dc

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 = 4.0

ph-index = 2

Forward Citations = 16(Granted Patents)


Company Filing History:


Years Active: 1990-1991

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2 patents (USPTO):Explore Patents

Title: Tohru Yamada: Innovator in Liquid Crystal Technology

Introduction

Tohru Yamada is a notable inventor based in Ichihara, Japan. He has made significant contributions to the field of liquid crystal technology, holding 2 patents that showcase his innovative work. His inventions focus on substituted naphthalene compounds, which have applications in various liquid crystal compositions.

Latest Patents

Yamada's latest patents include novel substituted naphthalene compounds and liquid crystal compositions. These compounds are represented by a specific formula where R¹ and R² denote alkyl groups of 1-18 carbon atoms. The compounds also feature a group represented by --OCH₂-- or --CH₂CH₂--, with n being either 0 or 1. The invention provides liquid crystal compositions that incorporate these substituted naphthalene compounds, enhancing their functionality and application in technology.

Career Highlights

Tohru Yamada is associated with Mitsui Petrochemical Industries, Ltd., where he has been able to apply his expertise in chemical engineering and innovation. His work has contributed to advancements in the development of liquid crystal technologies, which are essential in various electronic devices.

Collaborations

Yamada has collaborated with notable coworkers such as Tooru Yamanaka and Hideo Yamaoka. These partnerships have fostered a creative environment that encourages innovation and the development of new technologies.

Conclusion

Tohru Yamada's contributions to the field of liquid crystal technology through his patents reflect his dedication to innovation. His work continues to influence advancements in the industry, showcasing the importance of research and development in creating new solutions.

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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