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For the Inventor, By the Inventor

Kokubunji, Japan

Kazuhisa Fujimoto

This inventor holds 103 USPTO granted patents and 2 published patent applications, primarily in Flash Memory Storage (CPC class G06F1-200). Top assignees: Hitachi, Ltd., Other. Active years: 1994-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhisa Fujimoto. Retrieved from https://idiyas.com/inventor/kazuhisa-fujimoto

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

USPTO Granted Patents = 103 

% Patents Active = 31.1

Average Co-Inventor Count = 2.6

ph-index = 18

Forward Citations = 987(Granted Patents)

Forward Citations (Not Self Cited) = 909(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Kodaira, JP (1994 - 2007)
  • Chiyoda-ku, Tokyo JP (2010)
  • Kokubunji, JP (2002 - 2012)
  • Koganei, JP (2006 - 2014)
  • Tokyo, JP (2008 - 2022)

Company Filing History:

goldMedal100 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal3 out of 834,513 
Other
 patents

Years Active: 1994-2022

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Areas of Expertise:
Flash Memory
Data Management
Storage System
Encryption Processing
Resource Management
Data Control
Non-Volatile Memory
Computing System
Hierarchical Storage
Data Migration
Disk Controller
Power Supply Control
103 patents (USPTO):Explore Patents
1. 11366695 - System and method for assisting charging to use of accelerator unit (2022-06-21),
2. 11151141 - Data processing device and data processing method (2021-10-19),
3. 11150829 - Storage system and data control method (2021-10-19),
4. 10936377 - Distributed database system and resource management method for distributed database system (2021-03-02),
5. 10789253 - Computing system and server (2020-09-29),
6. 10452302 - Storage system and data control method (2019-10-22),
7. 10241909 - Non-volatile memory device (2019-03-26),
8. 9495105 - System managing a plurality of flash memory devices (2016-11-15),
9. 9251063 - Storage system including a plurality of flash memory devices (2016-02-02),
10. 9015111 - Storage system and storage system control method (2015-04-21),
11. 8924637 - Flash memory storage system (2014-12-30),
12. 8762995 - Computing system, method of controlling the same, and system management unit which plan a data migration according to a computation job execution schedule (2014-06-24),
13. 8631199 - Storage system, storage device, and control method thereof (2014-01-14),
14. 8526615 - Storage system executing encryption and decryption processing (2013-09-03),
15. 8458432 - Computer system, storage system and method for controlling power supply based on logical partition (2013-06-04),

Title: **Kazuhisa Fujimoto: A Leading Innovator from Kokubunji**

Introduction:

Kazuhisa Fujimoto, based in Kokubunji, Japan, stands out as a prolific inventor with an impressive total of 103 patents to his name. His work predominantly focuses on advancing technology in system and data management, illustrating his commitment to innovation and the development of more efficient solutions in various domains.

Latest Patents:

Fujimoto's latest innovations include a **system and method for assisting charging to use of accelerator units**. This charging assistant system is designed to optimize the usage of accelerator units by incorporating an operation amount obtaining unit, an acceleration rate estimation unit, and a use fee determination unit. The system analyzes commands input into the accelerator, determining the operation amount from responses and estimating an acceleration rate based on command execution time and operation amounts.

Another significant patent is the **storage system and data control method** aimed at extending the service lifespan of storage devices with varying properties while reducing operation management costs. This innovative storage system comprises a first storage device and a second with a smaller upper limit number of writes and greater storage capacity. A dedicated processor allocates and manages data to ensure optimal efficiency.

Career Highlights:

Kazuhisa Fujimoto has made notable contributions during his career, particularly during his time at Hitachi, Ltd. His experience in such a reputable organization has played a significant role in shaping his career and innovations in technology.

Collaborations:

Throughout his professional journey, Fujimoto has collaborated with esteemed colleagues, including **Akira Fujibayashi** and **Shuji Nakamura**. These partnerships have enhanced the scope of his inventions and have fostered an environment of shared innovation.

Conclusion:

Kazuhisa Fujimoto's achievements and contributions to technology underscore his status as a leading innovator. With a robust portfolio of patents, he continues to push the boundaries of innovation, showcasing the importance of his work in enhancing the efficiency and effectiveness of technological systems. His commitment to research and development serves as an inspiration to aspiring inventors and innovators alike.

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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