Fujisawa, Japan

Tomokazu Yokoyama

This inventor holds 22 USPTO granted patents and 1 published patent application, primarily in Storage Systems. Top assignee: Hitachi, Ltd.. Active years: 2006-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomokazu Yokoyama. Retrieved from https://idiyas.com/inventor/tomokazu-yokoyama

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

USPTO Granted Patents = 22 

% Patents Active = 13.6

Average Co-Inventor Count = 4.7

ph-index = 6

Forward Citations = 105(Granted Patents)


Location History:

  • Kanagawa, JP (2006 - 2010)
  • Fujisawa, JP (2006 - 2012)

Company Filing History:


Years Active: 2006-2012

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Areas of Expertise:
Power Supply
Disk Array Device
Storage Control
Error Management
Power Device
Configuration Change
Signal Shaping
Data Backup
Storage Unit
Disk Subsystem
Power Failure Detection
Communication Signal
22 patents (USPTO):Explore Patents

Title: **Tomokazu Yokoyama: Innovator in Power Supply Technologies**

Introduction

Tomokazu Yokoyama is a prominent inventor based in Fujisawa, Japan, recognized for his remarkable contributions to power supply technologies. With a portfolio of 22 patents, Yokoyama has demonstrated a profound understanding of innovative systems that enhance efficiency and reliability in storage solutions.

Latest Patents

Among his latest inventions, Yokoyama has developed a **storage system that finds the occurrence of power source failure**. This innovation involves the implementation of one or more switches interposed between a controller portion and a storage device. When a command fails to be transmitted to a certain storage device, this system begins transmitting commands along the upstream path to determine the source of the failure. Furthermore, his patent on a **power device and power device power supply method** showcases his ability to enhance power redundancy. This invention employs multiple DC/DC converters to provide individual power supply to various disk drives, ensuring continuous operation.

Career Highlights

Yokoyama currently works with Hitachi, Ltd., where he has made invaluable contributions to the field of power supply technologies. His work not only advances the company's mission but also sets new standards in the industry, underscoring the importance of reliability and efficiency in modern storage systems.

Collaborations

Throughout his career, Tomokazu Yokoyama has collaborated with esteemed professionals including Hiroshi Suzuki and Masato Ogawa. Their teamwork has led to groundbreaking innovations and reinforced the collaborative spirit that drives success in technology development.

Conclusion

In summary, Tomokazu Yokoyama exemplifies the spirit of innovation in the realm of power supply solutions. His inventive spirit and dedication to improving technological processes have positioned him as a significant figure in the industry. As he continues to pursue new developments, his contributions will undoubtedly leave a lasting impact on the field.

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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