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For the Inventor, By the Inventor

Sagamihara, Japan

Yasutomo Yamamoto

This inventor holds 134 USPTO granted patents and 3 published patent applications and 1 EPO patent, primarily in Data Storage Systems (CPC class G06F3-0605). Top assignees: Hitachi, Ltd., Other. Active years: 1998-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasutomo Yamamoto. Retrieved from https://idiyas.com/inventor/yasutomo-yamamoto

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

USPTO Granted Patents = 134 

% Patents Active = 23.1

 

Average Co-Inventor Count = 3.4

ph-index = 16

Forward Citations = 1,673(Granted Patents)

Forward Citations (Not Self Cited) = 1,570(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Odawara, JP (1998)
  • Chiyoda-ku, Tokyo JP (2010)
  • Sagamibara, JP (2013)
  • Tokyo, JP (2008 - 2014)
  • Sagamihara, JP (1999 - 2015)
  • Kanagawa, JP (2006 - 2016)

Company Filing History:

goldMedal133 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 834,513 
Other
 patents

Years Active: 1998-2016

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Areas of Expertise:
Data Transfer Method
Storage System
Logical Volume Transfer
Virtualization
Performance Tuning
Flash Memory
Data Management
Power Consumption
Storage Migration
Cache Management
Disk Devices
Information System
134 patents (USPTO):Explore Patents
1. 9329795 - Logical volume transfer method and storage network system (2016-05-03),
2. 9164941 - Storage system group (2015-10-20),
3. 8949563 - Computer system and data management method (2015-02-03),
4. 8918551 - Storage system (2014-12-23),
5. 8898383 - Apparatus for reallocating logical to physical disk devices using a storage controller and method of the same (2014-11-25),
6. 8832397 - Information system and data transfer method of information system (2014-09-09),
7. 8788786 - Storage system creating cache and logical volume areas in flash memory (2014-07-22),
8. 8762672 - Storage system and storage migration method (2014-06-24),
9. 8700870 - Logical volume transfer method and storage network system (2014-04-15),
10. 8694749 - Control method of device in storage system for virtualization (2014-04-08),
11. 8621119 - Storage system (2013-12-31),
12. 8612704 - Storage system with virtual areas and method for managing storage system (2013-12-17),
13. 8607012 - Storage system group (2013-12-10),
14. 8595453 - Information system and data transfer method of information system (2013-11-26),
15. 8583883 - Storage system comprising function for reducing power consumption (2013-11-12),

Title: Yasutomo Yamamoto: Innovator Extraordinaire from Sagamihara

Introduction:

Yasutomo Yamamoto, a resident of Sagamihara, Japan, is a prolific inventor with a passion for revolutionizing the world of storage systems. With an impressive portfolio of 134 patents, Yamamoto has made significant contributions to the field through his expertise and innovative mindset.

Latest Patents:

Yamamoto's latest patents showcase his commitment to optimizing storage networks with a logical volume transfer method and a storage system group. The logical volume transfer method enables the seamless replication of logical volumes between storage control units in a storage system. By leveraging a virtualization device and differential bitmap, this invention facilitates efficient data transfer and emergency destage processes. Additionally, the storage system group patent introduces a novel approach to manage journal data elements and logical volumes, enhancing overall system performance.

Career Highlights:

Throughout his career, Yamamoto has worked diligently to make substantial advancements in the field of storage systems. He has contributed his expertise to renowned companies like Hitachi Co., Ltd and others. With a deep understanding of the industry, he has consistently pushed the boundaries of innovation, paving the way for more efficient and reliable storage solutions.

Collaborations:

Yamamoto's groundbreaking work in the field of storage systems extends beyond individual achievements. In his professional journey, he has had the opportunity to collaborate with fellow inventors and experts in the industry. Notable examples include his partnerships with Yoshiaki Eguchi and Ai Satoyama. Through these collaborations, Yamamoto has fostered an environment of knowledge-sharing and collaboration, driving advancements in the field.

Conclusion:

Yasutomo Yamamoto's contributions to the field of storage systems are undeniably remarkable. Through his innovative mindset and deep understanding of the industry, he has consistently delivered groundbreaking inventions that optimize storage networks. With a portfolio of 134 patents and counting, Yamamoto continues to push boundaries, making storage systems more efficient and reliable. His career highlights and collaborations showcase his dedication to the advancement of the industry, inspiring future innovators to follow in his footsteps.

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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