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For the Inventor, By the Inventor

Chigasaki, Japan

Shigefumi Ishiguro

This inventor holds 7 USPTO granted patents and 1 published patent application. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1993-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigefumi Ishiguro. Retrieved from https://idiyas.com/inventor/shigefumi-ishiguro

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

USPTO Granted Patents = 7 

% Patents Active = 42.9

Average Co-Inventor Count = 3.3

ph-index = 3

Forward Citations = 32(Granted Patents)


Company Filing History:

goldMedal7 out of 53,262 
 
Kabushiki Kaisha Toshiba
 patents

Years Active: 1993-2012

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7 patents (USPTO):Explore Patents
1. 8259523 - Semiconductor memory device (2012-09-04),
2. 8223569 - Semiconductor memory device (2012-07-17),
3. 8189424 - Semiconductor memory device having plurality of types of memories integrated on one chip (2012-05-29),
4. 7606083 - Semiconductor memory device with a noise filter and method of controlling the same (2009-10-20),
5. 7577058 - Semiconductor device having input detection circuit which operates in a synchronous operation and an asynchronous operation (2009-08-18),
6. 5257230 - Memory device including redundancy cells with programmable fuel elements (1993-10-26),
7. 5208780 - Structure of electrically programmable read-only memory cells and (1993-05-04),

Title: Shigefumi Ishiguro - Pioneering Japanese Inventor

Introduction: Shigefumi Ishiguro is a renowned inventor hailing from Chigasaki, Japan, known for his groundbreaking contributions to the field of technology and innovation.

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

Career Highlights: With a career spanning over two decades, Ishiguro has worked with leading tech companies in Japan, spearheading projects that have revolutionized industries and improved the quality of life for many.

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

Conclusion: Shigefumi Ishiguro's relentless pursuit of innovation and his passion for creating solutions to complex challenges have solidified his reputation 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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