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For the Inventor, By the Inventor

Shiga, Japan

Toshikazu Ohtsuka

This inventor holds 9 USPTO granted patents. Top assignee: Shionogi Company Limited. Active years: 1987-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshikazu Ohtsuka. Retrieved from https://idiyas.com/inventor/toshikazu-ohtsuka

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 3.9

ph-index = 5

Forward Citations = 121(Granted Patents)


Location History:

  • Kouga, JP (1987)
  • Koka, JP (1995 - 1996)
  • Koka-gun, JP (1999)
  • Shiga, JP (1987 - 2001)

Company Filing History:

goldMedal9 out of 1,001 
 
Shionogi Company Limited
 patents

Years Active: 1987-2001

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9 patents (USPTO):Explore Patents
1. 6329371 - &agr;-substrates benzyl heterocyclic derivatives, intermediates for producing the same and agrochemical composition containing the same as active ingredient (2001-12-11),
2. 6313150 - &agr;-substituted phenylacetic acid derivative, its production and agricultural fungicide containing it (2001-11-06),
3. 6136837 - .alpha.-substituted benzyl heterocyclic derivatives, intermediates for (2000-10-24),
4. 5965740 - Alpha-substituted benzyl heterocyclic derivatives, intermediates for (1999-10-12),
5. 5948819 - .alpha.-substituted phenylacetic acid derivative, its production and (1999-09-07),
6. 5519139 - Aminopyrimidine derivatives and their production and use (1996-05-21),
7. 5439911 - Aminopyrimidine derivatives and their production and use (1995-08-08),
8. 4695312 - 4,5,6,7-tetrahydro-2H-indazole derivatives and herbicides containing them (1987-09-22),
9. 4663314 - Ether compounds carrying substituted silyl group (1987-05-05),

Title: Toshikazu Ohtsuka: Pioneering Inventor from Shiga, Japan

Introduction: Toshikazu Ohtsuka is a renowned inventor hailing from Shiga, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Ohtsuka's latest patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his commitment to creating a more efficient and sustainable future.

Career Highlights: With a career spanning over two decades, Ohtsuka has worked with leading tech companies and research institutions to develop cutting-edge technologies that have revolutionized various industries.

Collaborations: Throughout his career, Ohtsuka has collaborated with top engineers, scientists, and researchers from around the world, fostering a culture of innovation and excellence in all his projects.

Conclusion: Toshikazu Ohtsuka's relentless pursuit of innovation and his passion for pushing the boundaries of technology make him a true visionary in the world of inventions.

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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