Yao, Japan

Sachiko Tokumura

This inventor holds 6 USPTO granted patents and 1 published patent application. Top assignee: Matsumoto Yushi-Seiyaku Co., Ltd.. Active years: 2002-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sachiko Tokumura. Retrieved from https://idiyas.com/inventor/sachiko-tokumura

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

Calculating rank
USPTO Granted Patents = 6 

% Patents Active = 83.3

Average Co-Inventor Count = 1.9

ph-index = 2

Forward Citations = 14(Granted Patents)


Location History:

  • Osaka, JP (2005 - 2009)
  • Yao, JP (2002 - 2024)

Company Filing History:


Years Active: 2002-2024

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6 patents (USPTO):Explore Patents

Title: **Innovator Spotlight: Sachiko Tokumura**

Introduction

Sachiko Tokumura, based in Yao, Japan, is a prominent inventor known for her significant contributions to the field of materials science. With a total of six patents to her name, her innovations primarily focus on heat-expandable microspheres, showcasing her expertise in polymer chemistry and material applications.

Latest Patents

Among her latest patents is "Heat-expandable microspheres and application thereof." This invention details the creation of heat-expandable microspheres that consist of a thermoplastic resin shell and a thermally-vaporizable blowing agent encapsulated within. The thermoplastic resin results from a specific polymerizable component that includes acrylonitrile, methacrylonitrile, and acrylate esters, meeting conditions that ensure the resin's effectiveness in industrial applications. The detailed conditions outlined in the patent ensure optimal performance, with a focus on the balance between the components involved. Another notable patent under her name also revolves around heat-expandable microspheres and highlights the innovative polymerization of a component with specific ratios of monomers to achieve desired properties.

Career Highlights

Sachiko Tokumura is affiliated with Matsumoto Yushi-seiyaku Co., Ltd., where she continues to push the boundaries of her research and development efforts. Her career has been marked by a dedication to innovation and a commitment to advancing technology in her field. Through her work, she has strengthened the company's position as a leader in the development of heat-expandable materials.

Collaborations

Throughout her career, Sachiko has collaborated with esteemed colleagues, including Toshiaki Masuda and Katsushi Miki. Together, they have enhanced their research output and tackled various challenges in materials development, proving that teamwork can lead to groundbreaking inventions.

Conclusion

Sachiko Tokumura’s work exemplifies the spirit of innovation in the field of polymers. Her patents reflect her expertise and commitment to advancing material science, ensuring she remains a key figure in the development of heat-expandable microspheres. With her ongoing contributions, the future of her innovations looks promising, paving the way for new applications and advancements in the industry.

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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