Sumi Ishihara

USPTO Granted Patents = 33 (Patent Applications = 16)

CIPO Patents = 1

EPO Patents = 17 (Patent Applications = 38)

Average Co-Inventor Count = 5.9

ph-index = 3

Forward Citations = 24(Granted Patents)

Location History:

Sagamihara, JP (1991)
Tsukuba, JP (1996 - 2009)
Osaka, JP (2016 - 2024)

Company Filing History:

32 out of 4,270

Daikin Industries, Ltd.

Sagami Chemical Research Center

patents

where one patent can have more than one assignee

Years Active: 1991-2025

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33 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 12428365 - Production method of acrylic acid derivative (2025-09-30),

2. 12410267 - Composition production method, and composition (2025-09-09),

3. 12410266 - Method for manufacturing fluoropolymer (2025-09-09),

4. 12404387 - Production method for fluoropolymer, surfactant for polymerization, and use of surfactant (2025-09-02),

5. 12187859 - Process for producing aqueous fluoropolymer dispersion (2025-01-07),

6. 12012470 - Production method for fluoropolymer, surfactant for polymerization, and use of surfactant (2024-06-18),

7. 11999681 - Alkyl sulfate ester or salt of same (2024-06-04),

8. 11767379 - Method for manufacturing fluoropolymer (2023-09-26),

9. 11708324 - Sulfuric acid ester or salt thereof, and surfactant (2023-07-25),

10. 11680037 - Branched fluorine-containing compound (2023-06-20),

11. 11634514 - Method for manufacturing fluoropolymer, surfactant for polymerization, use for surfactant, and composition (2023-04-25),

12. 11512155 - Production method for fluoropolymer, surfactant for polymerization, and use of surfactant (2022-11-29),

13. 11440875 - Sulfonic acid, carboxylic acid, and salts thereof (2022-09-13),

14. 11279814 - Production method for fluoropolymer, surfactant for polymerization, and use of surfactant (2022-03-22),

15. 11261148 - Method for producing carbonyl compound (2022-03-01),

Title: Sumi Ishihara - Innovator in Fluoropolymer Technology

Introduction

Sumi Ishihara is a renowned inventor based in Osaka, Japan, who has made significant contributions to the field of fluoropolymer technology. With a remarkable portfolio of 29 patents, Ishihara's innovations play a crucial role in advancing materials science and engineering.

Latest Patents

Among Ishihara's latest patents is a groundbreaking process for producing aqueous fluoropolymer dispersion. This method includes a step of subjecting a pre-treatment aqueous dispersion containing a fluoropolymer, obtained by polymerization in the presence of a hydrocarbon surfactant, to ultrafiltration, microfiltration, or dialysis membrane treatment. The ultrafiltration is specifically performed using an ultrafiltration membrane with a molecular weight cutoff of 0.3×10 Da or more. Another notable patent focuses on the production method for fluoropolymer, surfactant for polymerization, and the use of surfactant. This innovative composition involves a fluoropolymer that is substantially free from specific chemical compounds, enhancing its applicability and performance.

Career Highlights

Sumi Ishihara has had a distinguished career, contributing to leading organizations such as Daikin Industries, Ltd. and the National University Corporation Hokkaido University. His work in these institutions has been pivotal in the development and commercialization of advanced polymer technologies.

Collaborations

During his professional journey, Ishihara has collaborated with esteemed colleagues, including Yosuke Kishikawa and Masahiro Higashi. Together, they have worked to push the boundaries of fluoropolymer research and application.

Conclusion

Sumi Ishihara's impressive array of patents and collaborations exemplifies his dedication to innovation within the fluoropolymer industry. His contributions not only enhance material properties but also pave the way for new applications that benefit various sectors, showcasing the importance of continuous research and development in the realm of polymers.

This text is generated by artificial intelligence and may not be accurate.