Kokubunji, Japan

Hitoshi Kakuta

This inventor holds 38 USPTO granted patents, primarily in Data Reconstruction. Top assignee: Hitachi, Ltd.. Active years: 1992-2008.


% Patents Active = 84.2

Average Co-Inventor Count = 2.6

ph-index = 18

Forward Citations = 906(Granted Patents)


Location History:

  • Tokyo, JP (1996 - 2007)
  • Kokubunji, JP (1992 - 2008)

Company Filing History:


Years Active: 1992-2008

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Areas of Expertise:
Data Reconstruction
Disk Array System
Power-On Sequence
Error Correction
File Data Multiplexing
Variable Length Data
Disk Drive Motors
Fault Recovery
Storage Units
Adjustable Parity Groups
Partial Data Reading
Parallel Transfer
38 patents (USPTO):Explore Patents

Title: Hitoshi Kakuta: Innovating Data Storage Solutions

Introduction: Hitoshi Kakuta, an accomplished inventor based in Kokubunji, Japan, has distinguished himself in the field of data storage technology with an impressive portfolio of 38 patents. His innovations have greatly contributed to enhancing the efficiency and reliability of data reconstruction processes in complex storage systems.

Latest Patents: Hitoshi's latest patents include a sophisticated data reconstruction method and system designed to control the timing of data reconstruction in response to failures. This system involves a data storage architecture that connects to a host unit responsible for issuing read/write requests. The setup includes multiple disk units that store data in various groups along with corresponding error correction data. The controller, operating in different modes, processes data reconstruction based on the remaining data and error correction data when a fault occurs in any disk unit.

Another notable invention is a disk system that manages the power-on sequence of disk drives powered by a single source. The method optimizes start-up by sequencing the power supplied to different groups of disks, ensuring that the current remains within the power source's capacity. This invention allows for simultaneous data transfers while preventing peak current issues through coordinated seek operations.

Career Highlights: Hitoshi Kakuta is currently employed at Hitachi, Ltd., a leading multinational company renowned for its technological advancements in various sectors, including data storage solutions. His work has focused on addressing challenges in data integrity and access speeds.

Collaborations: Throughout his career, Hitoshi has collaborated with notable colleagues such as Yoshihisa Kamo and Atsushi Tanaka. These collaborations have undoubtedly contributed to the development of innovative solutions within their projects.

Conclusion: With a total of 38 patents and groundbreaking innovations in data reconstruction and storage technologies, Hitoshi Kakuta stands out as a significant figure in the tech industry. His work continues to play a crucial role in advancing data storage methodologies, demonstrating a commitment to enhancing system reliability and performance.

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