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For the Inventor, By the Inventor

Tokyo, Japan

Yoshitaka Fujiishi

This inventor holds 10 USPTO granted patents and 1 published patent application. Top assignees: Ap Memory Technology Corporation, Mitsubishi Denki Kabushiki Kaisha, Renesas Technology Corp.. Active years: 2002-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshitaka Fujiishi. Retrieved from https://idiyas.com/inventor/yoshitaka-fujiishi

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

Calculating rank
USPTO Granted Patents = 10 

% Patents Active = 50.0

Average Co-Inventor Count = 1.8

ph-index = 2

Forward Citations = 23(Granted Patents)


Location History:

  • Hyogo, JP (2003 - 2004)
  • Tokyo, JP (2002 - 2021)
  • Hsinchu County, TW (2021)

Company Filing History:

goldMedal3 out of 26 
 
Ap Memory Technology Corporation
 patents
silverMedal3 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
bronzeMedal3 out of 3,781 
 
Renesas Technology Corp.
 patents
4. 2 out of 3 
 
Ap Memory Technology (Hangzhou) Limited Co.
 patents
5. 1 out of 7,659 
 
Renesas Electronics Corporation
 patents
where one patent can have more than one assignee

Years Active: 2002-2025

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10 patents (USPTO):Explore Patents
1. 12317521 - Capacitor device and manufacturing method therefor (2025-05-27),
2. 11038012 - Capacitor device and manufacturing method therefor (2021-06-15),
3. 10978413 - Circuit system having compact decoupling structure (2021-04-13),
4. 8106437 - Semiconductor storage device (2012-01-31),
5. 7348235 - Semiconductor device and method of manufacturing the same (2008-03-25),
6. 6828636 - Semiconductor device isolated resistive zone (2004-12-07),
7. 6743693 - Method of manufacturing semiconductor memory (2004-06-01),
8. 6703287 - Production method for shallow trench insulation (2004-03-09),
9. 6596582 - Method of manufacturing a semiconductor device (2003-07-22),
10. 6455381 - Method of manufacturing a semiconductor device having a trench isolation structure (2002-09-24),

Title: Yoshitaka Fujiishi: Pioneering Inventor from Tokyo

Introduction: Yoshitaka Fujiishi is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Fujiishi holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous dedication to pushing the boundaries of technological advancements.

Career Highlights: With a career spanning over two decades, Fujiishi has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant breakthroughs in various industries.

Collaborations: Throughout his career, Fujiishi has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing.

Conclusion: Yoshitaka Fujiishi's relentless pursuit of innovation and his passion for creating solutions to complex technological challenges have solidified his position as a pioneering inventor not only in Tokyo but on a global scale.

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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