Tokyo, Japan

Hiroko Mashiba

This inventor holds 2 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent. Top assignees: Nippon Kayaku Kabushiki Kaisha, Japan Science and Technology Corporation, Other. Active years: 2000-2010.

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

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

USPTO Granted Patents = 2 

% Patents Active = 50.0


Average Co-Inventor Count = 6.9

ph-index = 2

Forward Citations = 17(Granted Patents)


Location History:

  • Tokyo, JP (2000)
  • Kita-ku, JP (2010)

Company Filing History:


Years Active: 2000-2010

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2 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Inventor Hiroko Mashiba

Introduction: Hiroko Mashiba, an accomplished inventor based in Tokyo, Japan, has made significant advancements in the field of pharmaceuticals. With two patents to her name, her work predominantly focuses on enhancing the therapeutic effects of metabolic antagonists, which has profound implications for medical treatments.

Latest Patents: Among her notable inventions is the "Polymeric derivative of cytidine metabolic antagonist." This innovative derivative is designed to exert a high therapeutic effect at low doses. It encompasses a polymeric compound characterized by a polyethylene glycol moiety, integrated with a polymer moiety that features a carboxyl group in the side chain. This structure enables the formation of an amide bond between the carboxyl group and an amino group in the cytidine metabolic antagonist, enhancing its overall efficacy. Additionally, her patent titled "Anthracycline compound derivative and pharmaceutical preparation" continues to reflect her commitment to advancing pharmaceutical research.

Career Highlights: Throughout her career, Hiroko Mashiba has been associated with prominent organizations, including Nippon Kayaku Kabushiki Kaisha and Japan Science and Technology Corporation. These experiences have allowed her to cultivate her skills and contribute to significant innovations in the pharmaceutical sector.

Collaborations: In her journey, Hiroko has worked alongside esteemed colleagues such as Akira Masuda and Takeshi Onda. These collaborations have further enriched her research and expanded the impact of her inventions.

Conclusion: Hiroko Mashiba stands out as a trailblazer in pharmaceutical innovation, with her patents opening new avenues for effective medical interventions. Her dedication to enhancing therapeutic approaches not only showcases her ingenuity but also signifies her vital role in advancing healthcare solutions.

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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