Chigasaki, Japan

Kei Nakajima

This inventor holds 7 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1999-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kei Nakajima. Retrieved from https://idiyas.com/inventor/kei-nakajima-nywjaqcf

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

Calculating rank

% Patents Active = 71.4

Average Co-Inventor Count = 3.6

ph-index = 4

Forward Citations = 159(Granted Patents)


Company Filing History:


Years Active: 1999-2013

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7 patents (USPTO):Explore Patents

Title: Kei Nakajima: Innovator in Memory Management Technology

Introduction

Kei Nakajima is a prominent inventor based in Chigasaki, Japan. He has made significant contributions to the field of computer technology, particularly in memory management systems. With a total of seven patents to his name, Nakajima's work has had a notable impact on how computers handle memory allocation and data management.

Latest Patents

One of Nakajima's latest patents focuses on a memory management method and a computer utilizing this method. This innovative approach to memory management involves garbage collection, which allocates a specific memory area within a computer. Data is created in this memory area according to a program executed by the computer's processor. The system checks whether the necessary data for executing the program exists in the memory area designated for release. If the required data is absent, the memory area is released. Conversely, if the necessary data is present, it is relocated to a different memory area before the original area is released. This method enhances the efficiency of memory usage in computing systems.

Career Highlights

Kei Nakajima has built a successful career at Hitachi, Ltd., where he has been able to apply his innovative ideas in practical settings. His work has contributed to advancements in computer technology, particularly in optimizing memory management processes.

Collaborations

Throughout his career, Nakajima has collaborated with notable colleagues, including Hiroyasu Nishiyama and Motoki Obata. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field.

Conclusion

Kei Nakajima's contributions to memory management technology exemplify the importance of innovation in the computing industry. His patents and collaborative efforts continue to influence how data is managed in modern computer systems.

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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