Osaka, Japan

Masaaki Hirose

This inventor holds 2 USPTO granted patents. Top assignee: The Green Cross Corporation. Active years: 1992-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Hirose. Retrieved from https://idiyas.com/inventor/masaaki-hirose-qt8q4e77

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 = 5.7

ph-index = 2

Forward Citations = 6(Granted Patents)


Location History:

  • Osaka, JP (1992)
  • Hirakata, JP (1995)

Company Filing History:


Years Active: 1992-1995

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2 patents (USPTO):Explore Patents

Title: Innovations of Masaaki Hirose in Biotechnology

Introduction

Masaaki Hirose, based in Osaka, Japan, has made significant strides in the field of biotechnology through his inventions. With a total of two patents to his name, Hirose focuses on the modification of human prourokinase, an enzyme crucial for fibrinolysis, which is the process of breaking down fibrin in blood clots. His work addresses key aspects of enzymatic functionality and blood half-life, contributing to advancements in medical treatments.

Latest Patents

Hirose's latest patents showcase innovative modifications of human prourokinase. The first patent involves a mutant human prourokinase where a neutral amino acid in the epidermal growth factor (EGF) region has been substituted with either a basic or a non-acidic amino acid. This modification leads to enhanced affinity for fibrin and a prolonged half-life in the bloodstream. The second patent details a human prourokinase mutant having deleted or modified EGF domains, resulting in longer blood half-life while maintaining its enzymatic activity. These patents represent crucial advancements in the biomedical field, potentially improving treatment outcomes for patients with clotting disorders.

Career Highlights

Hirose's career has been marked by his pivotal role at The Green Cross Corporation, where he has leveraged his expertise in biotechnology to develop therapeutic enzymes. His contributions to the field are backed by rigorous research and experimentation, positioning him as a notable inventor in biopharmaceutical innovation.

Collaborations

Collaborating with professionals like Toshizumi Tanabe and Yasuo Amatsuji, Hirose has engaged in impactful research efforts that facilitate knowledge sharing and foster innovation. These collaborative endeavors enhance the development of cutting-edge biotechnological solutions and underscore the significance of teamwork in scientific achievements.

Conclusion

Masaaki Hirose's innovations in the field of biotechnology through his patents on modified human prourokinase signify a remarkable contribution to medical science. His work not only advances understanding of enzyme functionality but also opens doors to new therapeutic possibilities for patients. As biotechnological research evolves, Hirose's contributions will undoubtedly leave a lasting impact on the industry.

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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