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For the Inventor, By the Inventor

Tokyo, Japan

Nagamasa Mizushima

This inventor holds 54 USPTO granted patents and 4 published patent applications and 1 EPO patent, primarily in Data Storage Systems (CPC class G06F). Top assignees: Hitachi, Ltd., Renesas Technology Corp., Hitachi Vantara Corporation. Active years: 2002-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nagamasa Mizushima. Retrieved from https://idiyas.com/inventor/nagamasa-mizushima

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

Calculating rank
USPTO Granted Patents = 54 

% Patents Active = 51.9


Average Co-Inventor Count = 2.4

ph-index = 13

Forward Citations = 653(Granted Patents)

Forward Citations (Not Self Cited) = 639(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Fujisawa, JP (2002 - 2010)
  • Kawasaki, JP (2006 - 2013)
  • Machida, JP (2009 - 2015)
  • Yokohama, JP (2009 - 2016)
  • Tokyo, JP (2010 - 2024)

Company Filing History:

goldMedal38 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal11 out of 3,781 
 
Renesas Technology Corp.
 patents
bronzeMedal4 out of 227 
 
Hitachi Vantara Corporation
 patents
4. 1 out of 50 
 
Hitachi Industry & Control Solutions, Ltd.
 patents

Years Active: 2002-2026

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Areas of Expertise:
Data Storage
Memory Controller
Data Compression
Error Correction
Semiconductor Memory
Flash Memory
Remote Access
Storage Device
Data Processing
Storage System
Camera Management
Data Aggregation
54 patents (USPTO):Explore Patents
1. 12769444 - Storage system (2026-10-20),
2. 12754692 - Apparatus for processing received data (2026-10-06),
3. 12430475 - Computer and data processing method (2025-09-30),
4. 12353712 - Storage device (2025-07-08),
5. 12073080 - System and method for improving reliability of a data storage system (2024-08-27),
6. 12019921 - Apparatus for processing received data (2024-06-25),
7. 11829600 - Storage system and data processing method using data compression (2023-11-28),
8. 11640265 - Apparatus for processing received data (2023-05-02),
9. 11625168 - Storage device accelerator providing aggregation of divided plaintext data read (2023-04-11),
10. 11481114 - Storage apparatus and control method of storage apparatus (2022-10-25),
11. 11455122 - Storage system and data compression method for storage system (2022-09-27),
12. 11360669 - Storage device accelerator providing aggregation of divided plaintext data (2022-06-14),
13. 11275505 - Storage system (2022-03-15),
14. 11216336 - Storage apparatus and memory device control method (2022-01-04),
15. 11119702 - Apparatus for processing received data (2021-09-14),

Title: Unveiling the Innovative Mind of Inventor Nagamasa Mizushima

Introduction:

Meet Nagamasa Mizushima, a prolific inventor based in Tokyo, Japan, with an impressive portfolio of 48 patented inventions. His groundbreaking work in data compression and storage systems has revolutionized the way we process and store information.

Latest Patents:

Among his latest patents is a cutting-edge storage system and data processing method that optimizes data compression for efficient storage. This system intelligently selects compression algorithms based on decompression time, enhancing data retrieval speed and overall storage efficiency. Additionally, his work on an apparatus for processing received data showcases his commitment to streamlining decoding processes for improved performance.

Career Highlights:

Nagamasa Mizushima has left an indelible mark on the technology industry through his tenure at esteemed companies such as Hitachi Co., Ltd and Renesas Technology Corp. His innovative solutions have not only garnered recognition within the industry but have also enhanced the user experience for countless individuals worldwide.

Collaborations:

Throughout his career, Mizushima has collaborated with talented individuals such as Kunihiro Katayama and Motoyasu Tsunoda. Together, they have pushed the boundaries of technological advancement and paved the way for future innovation in the field of data processing and storage.

Conclusion:

Inventor Nagamasa Mizushima's dedication to pioneering new technologies and optimizing existing systems has solidified his status as a trailblazer in the world of innovation. His relentless pursuit of excellence continues to inspire and shape the future of data processing and storage.

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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