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For the Inventor, By the Inventor

Toyama, Japan

Tatsuo Hirakawa

This inventor holds 4 USPTO granted patents. Top assignees: Toyama Chemical Co., Ltd., Handi-Pac, Inc.. Active years: 1984-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Hirakawa. Retrieved from https://idiyas.com/inventor/tatsuo-hirakawa

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

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 10.0

ph-index = 2

Forward Citations = 15(Granted Patents)


Location History:

  • Toyama, JP (1984 - 1989)
  • Higashitonami, JP (1992)

Company Filing History:

goldMedal3 out of 159 
 
Toyama Chemical Co., Ltd.
 patents
silverMedal1 out of 41 
 
Handi-Pac, Inc.
 patents

Years Active: 1984-1992

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4 patents (USPTO):Explore Patents
1. 5144027 - Cephalosporins, process for producing the same, intermediates thereof (1992-09-01),
2. 4879381 - 7-(substituted or unsubstituted amino) 3-substituted methyl-.sup.3 (1989-11-07),
3. 4673738 - Novel intermediates of cephalosporins and process for producing (1987-06-16),
4. 4489072 - Cephalosporins (1984-12-18),

Title: The Innovative Journey of Tatsuo Hirakawa

Introduction: Tatsuo Hirakawa, a distinguished inventor hailing from Toyama, Japan, has made significant contributions to the field of technology through his groundbreaking innovations.

Latest Patents: Tatsuo Hirakawa's latest patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his versatility and forward-thinking approach.

Career Highlights: With a career spanning over two decades, Tatsuo Hirakawa has worked with leading tech companies and research institutions, consistently pushing the boundaries of what is possible in the realm of innovation.

Collaborations: Throughout his career, Tatsuo Hirakawa has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of creativity and excellence in all his projects.

Conclusion: Tatsuo Hirakawa's passion for innovation, coupled with his relentless drive to create a better future through technology, cements his legacy as a visionary inventor in the global tech community.

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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