Saitama, Japan

Shinji Yamaoka

This inventor holds 2 USPTO granted patents. Top assignees: Cosmo Oil Co., Ltd., Cosmo Research Institute. Active years: 1994-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shinji Yamaoka. Retrieved from https://idiyas.com/inventor/shinji-yamaoka

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 = 3.4

ph-index = 1

Forward Citations = 8(Granted Patents)


Company Filing History:


Years Active: 1994-1999

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2 patents (USPTO):Explore Patents

Title: The Innovations of Shinji Yamaoka

Introduction

Shinji Yamaoka is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of petroleum additives, holding two patents that showcase his innovative approach to improving storage stability and heat stability in petroleum products.

Latest Patents

Yamaoka's latest patents include a petroleum additive that boasts excellent storage stability and heat stability. This additive comprises an alkaline earth metal salt of aromatic hydroxycarboxylic acid, which contains a higher aliphatic carboxylic acid, a higher aliphatic amine, or a higher aliphatic amide, or a sulfurized mixture thereof. Additionally, he has developed a process for producing an over-based alkaline earth metal phenate. This process involves reactions among phenols, dihydric alcohols, and an alkaline earth metal reagent, followed by a carbon dioxide treatment that enhances the basicity and viscosity of the resulting product.

Career Highlights

Throughout his career, Yamaoka has worked with prominent organizations such as Cosmo Research Institute and Cosmo Oil Co., Ltd. His work has been instrumental in advancing the quality of lubricating and fuel oils through innovative chemical processes.

Collaborations

Yamaoka has collaborated with notable colleagues, including Sanae Ueda and Jun Imai. Their combined expertise has contributed to the successful development of his patented technologies.

Conclusion

Shinji Yamaoka's contributions to the field of petroleum additives highlight his innovative spirit and dedication to improving industrial processes. His patents reflect a commitment to enhancing product quality and stability in the petroleum industry.

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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