Tokyo, Japan

Hiroko Inagaki

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: Mitsubishi Chemical Corporation, Mitsubishi Kasei Corporation. Active years: 1991-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroko Inagaki. Retrieved from https://idiyas.com/inventor/hiroko-inagaki-szm8tf9j

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

Calculating rank
USPTO Granted Patents = 2 

% Patents Active = 100.0

Average Co-Inventor Count = 2.9

ph-index = 2

Forward Citations = 12(Granted Patents)


Location History:

  • Machida, JP (1991)
  • Tokyo, JP (2000)

Company Filing History:


Years Active: 1991-2000

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2 patents (USPTO):Explore Patents

Title: Hiroko Inagaki: Innovator in Epoxy Resin and Butanediol Production

Introduction

Hiroko Inagaki is a notable inventor based in Tokyo, Japan. She has made significant contributions to the fields of epoxy resin compositions and methods for producing 1,4-butanediol. With a total of 2 patents, her work showcases her innovative spirit and dedication to advancing chemical engineering.

Latest Patents

Inagaki's latest patents include an epoxy resin composition designed to provide a cured resin with excellent weatherability and electrical properties. This composition is particularly useful for coatings, encapsulants, casting materials, and electric insulators. The formulation includes a hydrogenated epoxy resin derived from an aromatic epoxy resin, characterized by a hydrogenation ratio in the aromatic ring of not less than 85%, a loss ratio of epoxy groups of not more than 20%, and a total chlorine content of not more than 0.3% by weight. Additionally, she has developed a method for producing 1,4-butanediol through the hydrogenation of succinic anhydride, succinic acid, or gamma-butyrolactone in the presence of a ruthenium-type catalyst.

Career Highlights

Throughout her career, Inagaki has worked with prominent companies such as Mitsubishi Kasei Corporation and Mitsubishi Chemical Corporation. Her experience in these organizations has allowed her to refine her skills and contribute to significant advancements in her field.

Collaborations

Inagaki has collaborated with notable coworkers, including Yoshinori Hara and Mareki Miura. These partnerships have fostered a creative environment that has led to innovative solutions in chemical processes.

Conclusion

Hiroko Inagaki's contributions to the development of epoxy resin compositions and butanediol production highlight her role as a leading inventor in her field. Her patents reflect her commitment to innovation and excellence in chemical engineering.

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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