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For the Inventor, By the Inventor

Sodegaura, Japan

Keiko Yoshitake

This inventor holds 11 USPTO granted patents and 4 published patent applications and 5 EPO patents. Top assignees: Nissan Chemical Industries Limited, Nissan Chemical Corporation. Active years: 2000-2023.

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

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

USPTO Granted Patents = 11 

% Patents Active = 100.0

 

Average Co-Inventor Count = 2.8

ph-index = 2

Forward Citations = 36(Granted Patents)


Location History:

  • Funabashi, JP (2000)
  • Sodegaura, JP (2007 - 2023)

Company Filing History:

goldMedal10 out of 1,235 
 
Nissan Chemical Industries Limited
 patents
silverMedal1 out of 259 
 
Nissan Chemical Corporation
 patents

Years Active: 2000-2023

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11 patents (USPTO):Explore Patents
1. 11549019 - Inorganic oxide sol dispersed in hydrocarbon and production method therefor (2023-01-10),
2. 10239758 - Silica sol and method for producing silica sol (2019-03-26),
3. 10173901 - Silica particles, manufacturing method for the same, and silica sol (2019-01-08),
4. 9777141 - Silica-containing resin composition and method for producing same, and molded article produced from silica-containing resin composition (2017-10-03),
5. 9527749 - Colloidal silica particles, process for producing the same, and organic solvent-dispersed silica sol, polymerizable compound-dispersed silica sol, and dicarboxylic anhydride-dispersed silica sol each obtained from the same (2016-12-27),
6. 9376322 - Process for producing colloidal silica particles (2016-06-28),
7. 9284197 - Colloidal silica particles, process for producing the same, and organic solvent-dispersed silica sol, polymerizable compound-dispersed silica sol, and dicarboxylic anhydride-dispersed silica sol each obtained from the same (2016-03-15),
8. 7999026 - Reactive monomer-dispersed silica sol and production method thereof, and curable composition and cured article thereof (2011-08-16),
9. 7737187 - Process for producing inorganic oxide organosol (2010-06-15),
10. 7186440 - Process for producing hydrophobic silica powder (2007-03-06),
11. 6025455 - Process of producing hydrophobic organosilica sol (2000-02-15),

Title: Keiko Yoshitake: Innovator in Inorganic Oxide Solutions

Introduction

Keiko Yoshitake is a prominent inventor based in Sodegaura, Japan. She has made significant contributions to the field of inorganic oxide solutions, holding a total of 11 patents. Her work focuses on the development of stable dispersions of inorganic oxide particles in organic solvents.

Latest Patents

Among her latest patents is a method for producing an inorganic oxide sol that is dispersed in a hydrophilic organic solvent. This sol contains inorganic oxide particles with an average diameter of 5 to 200 nm, ensuring stability and effectiveness in various applications. Another notable patent involves a silica sol that boasts excellent moisture absorption resistance and high purity, making it suitable for use in solvents and resins without causing discoloration.

Career Highlights

Keiko has worked with notable companies such as Nissan Chemical Industries Limited and Nissan Chemical Corporation. Her experience in these organizations has allowed her to refine her expertise in the field of chemical engineering and materials science.

Collaborations

Throughout her career, Keiko has collaborated with esteemed colleagues, including Naohiko Suemura and Ichitaro Kikunaga. These partnerships have contributed to her innovative research and development efforts.

Conclusion

Keiko Yoshitake's contributions to the field of inorganic oxide solutions highlight her role as a leading inventor. Her patents reflect her commitment to advancing technology and improving material properties.

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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