Kawasaki, Japan

Katsumi Shigenobu

This inventor holds 3 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1996-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Shigenobu. Retrieved from https://idiyas.com/inventor/katsumi-shigenobu

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


% Patents Active = 66.7

Average Co-Inventor Count = 4.6

ph-index = 3

Forward Citations = 142(Granted Patents)


Company Filing History:


Years Active: 1996-2007

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3 patents (USPTO):Explore Patents

Title: **Innovator Spotlight: Katsumi Shigenobu**

Introduction

Katsumi Shigenobu, an accomplished inventor based in Kawasaki, Japan, has made significant contributions to the field of semiconductor memory devices. With a total of three patents to his name, Shigenobu's innovations are shaping the future of memory technology. His work is particularly recognized for enhancing the efficiency and reliability of semiconductor devices.

Latest Patents

Among his latest patents is the creation of a self-testing circuit within semiconductor memory devices. This innovative circuit utilizes a comparison mechanism to evaluate both normal and redundant memory blocks, determining the device’s condition as either good or defective based on a series of comparison results. Another notable invention is a synchronous DRAM, which features an intricate architecture including an input buffer, a memory cell array, and dual latch circuits designed to optimize data processing. These patented technologies demonstrate Shigenobu's expertise in refining and advancing memory device functionalities.

Career Highlights

Shigenobu's career at Fujitsu Corporation, a global leader in IT services and products, has been marked by his dedication to research and development in semiconductor technology. His role at Fujitsu allows him to collaborate with top industry professionals and contribute to innovative solutions that address modern technology challenges.

Collaborations

Throughout his career, Shigenobu has had the privilege of working alongside talented colleagues such as Yukinori Kodama and Hirohiko Mochizuki. These collaborations have fostered an environment of creativity and technological advancement within Fujitsu Corporation, propelling their projects to new heights.

Conclusion

Katsumi Shigenobu stands out as a pioneering inventor in the realm of semiconductor memory technology. His recent patents not only enhance device performance but also contribute significantly to the broader field of electronics. As technology continues to evolve, the importance of innovators like Shigenobu cannot be overstated, ensuring that advancements in memory devices meet the demands of the future.

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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