Osaka, Japan

Keiko Izumi

This inventor holds 5 USPTO granted patents and 1 published patent application and 2 EPO patents. Top assignees: Nippon Shokubai Co., Ltd., Panasonic Corporation, Panasonic Intellectual Property Management Co., Ltd.. Active years: 2010-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiko Izumi. Retrieved from https://idiyas.com/inventor/keiko-izumi

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

USPTO Granted Patents = 5 

% Patents Active = 80.0

 

Average Co-Inventor Count = 3.4

ph-index = 2

Forward Citations = 11(Granted Patents)


Location History:

  • Toyonaka, JP (2010)
  • Ishikawa, JP (2011 - 2018)
  • Osaka, JP (2019 - 2021)

Company Filing History:


Years Active: 2010-2021

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5 patents (USPTO):Explore Patents

Title: Keiko Izumi: Innovator in Viscosity Index Improvers

Introduction

Keiko Izumi is a prominent inventor based in Osaka, Japan. She has made significant contributions to the field of lubricating oil compositions, holding a total of 5 patents. Her innovative work focuses on improving the performance and stability of lubricants through advanced chemical formulations.

Latest Patents

Among her latest patents is a viscosity index improver and lubricating oil composition. This invention comprises a copolymer that includes a unit derived from a maleimide monomer and a unit derived from a macromonomer. The viscosity of the solution is measured to be 8000 mPa·s or less. The viscosity measurement method involves a solution made up of 78 mass % of a Group III base oil and 22 mass % of the copolymer, measured at 25°C using a viscometer. Another notable patent involves a viscosity index improver that features a polymer with a high viscosity index and good shear stability, ensuring sufficient solubility in lubricating base oil.

Career Highlights

Keiko has worked with notable companies such as Nippon Shokubai Co., Ltd. and Panasonic Intellectual Property Management Co., Ltd. Her experience in these organizations has allowed her to develop and refine her innovative ideas in the field of lubricants.

Collaborations

Throughout her career, Keiko has collaborated with esteemed colleagues, including Kazunari Yasumura and Youichi Gouda. These partnerships have contributed to her success and the advancement of her inventions.

Conclusion

Keiko Izumi stands out as a leading inventor in the field of viscosity index improvers, with a strong portfolio of patents that enhance the performance of lubricating oils. Her contributions continue to impact the industry positively.

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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