Location History:
- Ami-machi, JP (1996 - 1997)
- Ibaraki, JP (1993 - 2005)
- Kanagawa, JP (2015 - 2016)
- Chiyoda-ku, JP (2020)
- Tokyo, JP (2024)
Company Filing History:
6 out of 2,346 
1 out of 181 
1 out of 546 Years Active: 1993-2025
Title: Naoko Sumitani: Innovator in Silica Particle Technology
Introduction
Naoko Sumitani is a prominent inventor based in Kanagawa, Japan. She has made significant contributions to the field of silica particle technology, holding a total of 9 patents. Her work focuses on enhancing the characteristics and production methods of silica particles, which are essential in various industrial applications.
Latest Patents
Sumitani's latest patents include innovations such as a silica particle and production method, silica sol, polishing composition, polishing method, method for producing semiconductor wafers, and method for producing semiconductor devices. The primary objective of her inventions is to provide silica particles with excellent polishing characteristics and storage stability. One of her notable inventions describes a silica particle where the proportion of silanol groups on the surface is 15% or less, ensuring optimal performance in polishing applications.
Career Highlights
Throughout her career, Naoko Sumitani has worked with leading companies in the chemical industry, including Mitsubishi Chemical Corporation and Nihon Nohyaku Co., Ltd. Her expertise in silica technology has positioned her as a key figure in the development of advanced materials for semiconductor manufacturing and polishing processes.
Collaborations
Sumitani has collaborated with notable colleagues such as Yuji Ohgomori and Shuji Ichikawa, contributing to the advancement of silica particle technology through shared knowledge and innovative research.
Conclusion
Naoko Sumitani's contributions to silica particle technology have established her as a leading inventor in her field. Her patents reflect a commitment to improving industrial processes and materials, showcasing her impact on the technology landscape.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.