Ohmuta, Japan

Tomoko Kamashita

This inventor holds 2 USPTO granted patents. Top assignee: Mitsui Toatsu Chemicals, Incorporated. Active years: 1994-1997.

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

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 = 5.1

ph-index = 1

Forward Citations = 12(Granted Patents)


Company Filing History:


Years Active: 1994-1997

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2 patents (USPTO):Explore Patents

Title: Innovations by Tomoko Kamashita

Introduction

Tomoko Kamashita is a notable inventor based in Ohmuta, Japan. She has made significant contributions to the field of chemistry, particularly in the development of color-developing agents and methods for extracting amino acid esters. With a total of two patents to her name, her work has garnered attention in the scientific community.

Latest Patents

Kamashita's latest patents include a color-developing agent that comprises a multivalent metal salt of a salicylic acid derivative and a sulfonated phenol. This innovative agent exhibits excellent initial and ultimate color-developing capacities along with improved waterproofness. Additionally, she has developed a color-developing sheet that utilizes this color-developing agent. Another significant patent involves a method for extracting an amino acid ester from a hydrous solution. This method entails adding a water-insoluble organic solvent and a base to liberate a portion of the amino acid ester in free base form, allowing for efficient extraction.

Career Highlights

Kamashita is currently employed at Mitsui Toatsu Chemicals, Incorporated, where she continues to advance her research and development efforts. Her work has been instrumental in enhancing the capabilities of color-developing agents and extraction methods, contributing to various applications in the chemical industry.

Collaborations

Some of her notable coworkers include Teruyuki Nagata and Takeshi Nishimura, who collaborate with her on various projects within the company.

Conclusion

Tomoko Kamashita's innovative contributions to chemistry, particularly in color development and amino acid extraction, highlight her role as a leading inventor in her field. Her patents reflect her commitment to advancing scientific knowledge and practical applications.

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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