Kanagawa, Japan

Takashi Ushijima

This inventor holds 1 USPTO granted patent. Top assignees: Cosmo Oil Co., Ltd., Dow Corning Kabushiki Kaisha, Tochigi Fuji Sangyo Kabushiki Kaisha. Active years: 1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Ushijima. Retrieved from https://idiyas.com/inventor/takashi-ushijima-y7fdywab

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 = 7.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 1990

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1 patent (USPTO):Explore Patents

Title: Takashi Ushijima: Innovator in Viscous Coupling Technology

Introduction

Takashi Ushijima is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of fluid compositions, particularly in the context of viscous coupling technology. His innovative work has led to the development of a unique fluid composition that enhances the performance of viscous couplings.

Latest Patents

Ushijima holds a patent for a fluid composition designed for use in viscous coupling. This composition includes a base oil made of a polyorganosiloxane fluid, which has a viscosity ranging from about 500 to about 500,000 centistokes at 25 degrees Celsius. Additionally, the composition incorporates at least one component selected from sulfur and sulfur compounds, added in a minor amount to the base oil. This invention represents a significant advancement in the technology of viscous couplings.

Career Highlights

Throughout his career, Takashi Ushijima has worked with prominent companies in the industry. He has been associated with Cosmo Oil Co., Ltd. and Dow Corning Kabushiki Kaisha, where he has applied his expertise in fluid compositions and contributed to various innovative projects.

Collaborations

Ushijima has collaborated with notable colleagues, including Hiromu Minamitani and Norio Yano. Their combined efforts have furthered advancements in the field of viscous coupling technology.

Conclusion

Takashi Ushijima's contributions to the development of fluid compositions for viscous couplings highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and pave the way for future innovations.

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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