Shinbashi, Japan

Sachiko Shirakura

This inventor holds 1 USPTO granted patent. Top assignee: Helene Curtis Industries, Inc.. Active years: 1984.

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

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 1984

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1 patent (USPTO):Explore Patents

Title: Sachiko Shirakura: Innovator in Hair Care Technology

Introduction

Sachiko Shirakura is a notable inventor based in Shinbashi, Japan. She has made significant contributions to the field of hair care technology, particularly with her innovative patent related to hair waving.

Latest Patents

Shirakura holds a patent for a "Neutralizer for Permanent Wave." This invention is designed to enhance the process of permanent waving of hair. The neutralizer comprises (A) 0.5-16% (w/v) of an oxidizing agent that is capable of reforming ruptured disulfide bonds in reduced hair, and (B) 0.1-5% (w/v) of a cationic dextran derivative or its salt as indispensable components. The pH value of this neutralizer ranges from about 2 to about 10.5, making it a versatile solution for hair treatment.

Career Highlights

Sachiko Shirakura is associated with Helene Curtis Industries, Inc., where she has been instrumental in developing innovative hair care products. Her work has contributed to advancements in the beauty industry, particularly in the area of permanent hair waving.

Collaborations

Shirakura collaborates with her coworker, Hiroo Namiki, who also plays a vital role in the development of hair care technologies. Their partnership has fostered creativity and innovation within their projects.

Conclusion

Sachiko Shirakura's contributions to hair care technology through her patent for a neutralizer for permanent waving demonstrate her commitment to innovation in the beauty industry. Her work continues to influence the way hair treatments are approached, showcasing the importance of scientific advancements in everyday products.

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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