Maebashi, Japan

Tomoko Hasegawa

This inventor holds 3 USPTO granted patents, plus 1 CIPO patent. Top assignees: Mitsubishi Pencil Kabushiki Kaisha, Hanix Co., Ltd.. Active years: 1995-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomoko Hasegawa. Retrieved from https://idiyas.com/inventor/tomoko-hasegawa-wpnud7py

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

Calculating rank

% Patents Active = 100.0


Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 38(Granted Patents)


Company Filing History:


Years Active: 1995-1998

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3 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Tomoko Hasegawa

Introduction

Tomoko Hasegawa is an accomplished inventor based in Maebashi, Japan. With a total of three patents to her name, she has made significant contributions to the fields of temporary hair dyes and dental care products. Her innovative approaches have enhanced the usability and effectiveness of everyday items we often take for granted.

Latest Patents

Hasegawa's most recent patents showcase her ingenuity:

1. **Temporary Hair Dyes**: This invention focuses on creating a temporary hair dye that offers exceptional dispersion stability of pigments, even after prolonged storage. By dispersing titanium black—safe for human application—into an alcohol solvent with four or fewer carbon atoms, primarily ethanol, she developed a formulation that includes a specialized copolymer. This temporary hair dye also allows for variations in hue by optimizing the dispersion of other pigments, particularly iron oxide variants.

2. **Teeth Coating Liquid**: Hasegawa's teeth-coating liquid comprises color pigments, primarily titanium oxide, along with pearl or extender pigments like tricalcium phosphate. Dispersed in an alcohol series solvent, mainly ethanol, her formulation offers remarkable dispersion stability and coating properties. Moreover, it incorporates a unique copolymer to boost gloss, adhesion, and overall performance, improving the user experience in dental care.

Career Highlights

Throughout her career, Tomoko Hasegawa has worked at notable companies, including Mitsubishi Pencil Corporation and Hanix Co., Ltd. Her time at these organizations has provided her with valuable experience and insights into product development and innovation.

Collaborations

During her journey as an inventor, Hasegawa has collaborated with esteemed colleagues such as Katsuhiko Shiraishi and Kiyokazu Sakurai. Their partnership has fostered creativity and driven forward-thinking solutions to complex problems in the industry.

Conclusion

Tomoko Hasegawa exemplifies the spirit of innovation, continuously pushing the boundaries of what is possible in personal care products. Her patents not only enhance the functionality and aesthetic of hair dyes and dental products but also reflect a commitment to safety and user satisfaction. As she continues to innovate, the industry can expect even more groundbreaking contributions from this talented inventor.

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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