Naoko Kumagai

This inventor holds 7 USPTO granted patents and 1 published patent application. Top assignees: Sony Corporation, Hitachi, Ltd.. Active years: 2005-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoko Kumagai. Retrieved from https://idiyas.com/inventor/naoko-kumagai

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

USPTO Granted Patents = 7 (Patent Applications = 1)

% Patents Active = 28.6

Average Co-Inventor Count = 2.5

ph-index = 3

Forward Citations = 31(Granted Patents)

Location History:

Isehara, JP (2013)
Tokyo, JP (2005 - 2019)

Company Filing History:

Years Active: 2005-2019

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10168945 - Storage apparatus and storage system (2019-01-01),

2. 8572319 - Method for calculating tier relocation cost and storage system using the same (2013-10-29),

3. 7865942 - Communication device, communication system and method for managing access authority data (2011-01-04),

4. 7596805 - Device and method for controlling access to open and non-open network segments (2009-09-29),

5. 7159175 - Cut-list creation system, center server, advertisement creation terminals, computer programs, storage media and cut-list creation method of center server (2007-01-02),

6. 7103673 - System for transmitting reservation data and completing the transmission by transmission completion time (2006-09-05),

7. 6952804 - Video supply device and video supply method (2005-10-04),

Title: Naoko Kumagai: Innovator in Storage Systems

Introduction

Naoko Kumagai is a prominent inventor based in Tokyo, Japan. She has made significant contributions to the field of storage systems, holding a total of 7 patents. Her innovative work focuses on improving data management and storage efficiency.

Latest Patents

Kumagai's latest patents include a storage apparatus and a method for calculating tier relocation costs in storage systems. The storage apparatus features first and second storage devices, with a controller that manages data migration based on I/O frequency. This design enhances the performance and reliability of data storage. Additionally, her method for calculating tier relocation costs revolutionizes how fees for storage system services are determined, allowing for more accurate charging based on data migration and access frequency.

Career Highlights

Throughout her career, Naoko Kumagai has worked with leading companies such as Sony Corporation and Hitachi, Ltd. Her experience in these organizations has allowed her to develop and refine her innovative ideas in storage technology.

Collaborations

Kumagai has collaborated with notable colleagues, including Hiroki Kotani and Atsuhiko Mimura. These partnerships have contributed to her success and the advancement of her inventions.

Conclusion

Naoko Kumagai is a trailblazer in the field of storage systems, with a focus on enhancing data management through her innovative patents. Her work continues to influence the industry and pave the way for future advancements.

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]

1 patent pending: