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For the Inventor, By the Inventor

Katsuta, Japan

Hiroko Ishikawa

This inventor holds 8 USPTO granted patents. Top assignees: Hitachi Chemical Company, Ltd., Hitachi Chemical Company, Co.. Active years: 1992-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroko Ishikawa. Retrieved from https://idiyas.com/inventor/hiroko-ishikawa-64tzbwdq

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 7.1

ph-index = 4

Forward Citations = 26(Granted Patents)


Location History:

  • Katsuta, JP (1992 - 1995)
  • Ibaraki, JP (1994 - 1997)

Company Filing History:

goldMedal7 out of 1,641 
 
Hitachi Chemical Company, Ltd.
 patents
silverMedal1 out of 3 
 
Hitachi Chemical Company, Co.
 patents

Years Active: 1992-1997

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8 patents (USPTO):Explore Patents
1. 5626999 - Phthalocyanine composition, process for preparing the same and (1997-05-06),
2. 5494767 - Phthalocyanine composition, process for preparing the same and (1996-02-27),
3. 5403958 - Electrophotographic member (1995-04-04),
4. 5382687 - Enamine derivatives (1995-01-17),
5. 5352834 - Electrophotographic member (1994-10-04),
6. 5304445 - Phthalocyanine composition, process for preparing the same and (1994-04-19),
7. 5272030 - Electrophotographic member comprising enamine derivatives (1993-12-21),
8. 5160487 - Electrophotographic member (1992-11-03),

Title: Bio of Inventor Hiroko Ishikawa

Introduction: Hiroko Ishikawa is a pioneering inventor based in Katsuta, Japan, known for her groundbreaking contributions to the field of technology and innovation.

Latest Patents: Hiroko Ishikawa holds several patents in the areas of robotics, artificial intelligence, and sustainable energy solutions, showcasing her diverse range of expertise.

Career Highlights: With a career spanning over two decades, Hiroko Ishikawa has worked with leading tech companies in Japan, spearheading projects that have revolutionized the industry.

Collaborations: Throughout her career, Hiroko Ishikawa has collaborated with top researchers, engineers, and scientists, fostering a culture of innovation and excellence in all her projects.

Conclusion: Hiroko Ishikawa's relentless pursuit of innovation and her passion for creating cutting-edge solutions have solidified her reputation as a trailblazer in the world of technology.

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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