Location History:
- Toyonaka, JP (2010)
- Ishikawa, JP (2011 - 2018)
- Osaka, JP (2019 - 2021)
Company Filing History:
3 out of 1,332 
1 out of 13,307 
1 out of 16,453 
Years Active: 2010-2021
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.