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For the Inventor, By the Inventor

Tokyo, Japan

Mitsuo Hayasaka

This inventor holds 68 USPTO granted patents and 40 published patent applications, primarily in Data Management Systems (CPC class G06F). Top assignees: Hitachi, Ltd., Hitachi Vantara Corporation, Hitachi Information & Telecommunication Engineering, Ltd.. Active years: 2015-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mitsuo Hayasaka. Retrieved from https://idiyas.com/inventor/mitsuo-hayasaka

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

USPTO Granted Patents = 68 

% Patents Active = 89.7

Average Co-Inventor Count = 2.6

ph-index = 4

Forward Citations = 59(Granted Patents)

Forward Citations (Not Self Cited) = 50(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Ota-ku, JP (2015)
  • Tokyo, JP (2015 - 2024)

Company Filing History:

goldMedal56 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal12 out of 224 
 
Hitachi Vantara Corporation
 patents
bronzeMedal3 out of 46 
 
Hitachi Information & Telecommunication Engineering, Ltd.
 patents
where one patent can have more than one assignee

Years Active: 2015-2026

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Areas of Expertise:
Data Management
Storage Systems
Resource Allocation
Malicious Program Detection
Distributed Storage
Quota Management
File Storage
Information Processing
Backup Management
Log Storage
Performance Control
Data Transfer
68 patents (USPTO):Explore Patents
1. 12632320 - Information processing apparatus and information processing method (2026-05-19),
2. 12613963 - Storage system and malicious program detection method (2026-04-28),
3. 12608145 - Computer system and storage management method for allocating storage areas to containers based on storage characteristics and connection information in a multi-base cloud environment (2026-04-21),
4. 12547517 - Arrangement plan search device, computer system, and arrangement plan search method (2026-02-10),
5. 12519853 - Computer system and management method for computer system (2026-01-06),
6. 12475001 - Computer system and backup management method (2025-11-18),
7. 12461796 - Computer and model generation method (2025-11-04),
8. 12436971 - Support device and method (2025-10-07),
9. 12340084 - Quota management system and quota management method (2025-06-24),
10. 12223267 - Question answering system, question answering program, and question answering method (2025-02-11),
11. 12222952 - Information processing system and log storage method for information processing system (2025-02-11),
12. 12169479 - Unified storage and method of controlling unified storage (2024-12-17),
13. 12169441 - Data management system and data management method (2024-12-17),
14. 12118393 - Resource allocation control based on performance-resource relationship (2024-10-15),
15. 12099726 - Rebalancing volumes in computer system comprising upper and lower cluster (2024-09-24),

Title: Innovations of Mitsuo Hayasaka: A Pioneer in Question Answering Systems

Introduction

Mitsuo Hayasaka, a prominent inventor located in Tokyo, Japan, has made significant contributions to the field of information processing and artificial intelligence. With a remarkable portfolio of 59 patents, he has dedicated his career to developing innovative solutions that enhance user interactions with technology.

Latest Patents

Hayasaka's latest patents include a question answering system, a question answering program, and a question answering method. His question answering system is designed to include a dangerous operation determination unit, which assesses whether the question-answer pair data encompasses a dangerous operation. In cases where a dangerous operation is identified, the system utilizes an answer sentence replacement unit to substitute the original answer sentence, thereby generating a safer alternative based on the classification of the danger. Additionally, his information processing system patent outlines a log storage method aimed at streamlining user request processing based on identification information.

Career Highlights

Over the years, Mitsuo Hayasaka has had a successful career with well-known companies such as Hitachi, Ltd. and Hitachi Information & Telecommunication Engineering, Ltd. His experience within these organizations has enabled him to refine his skills and contribute to cutting-edge advancements in information technology and artificial intelligence.

Collaborations

During his journey, Hayasaka has collaborated with esteemed colleagues, including Shimpei Nomura and Kazumasa Matsubara. These partnerships have further enriched his work, leading to the development of innovative technologies and solutions that address complex challenges in information processing.

Conclusion

Mitsuo Hayasaka stands as a testament to the power of innovation in the tech industry. His groundbreaking patents, coupled with his extensive experience and collaborative efforts, continue to drive advancements in question answering systems and information processing technologies. His work not only enhances user safety but also contributes to the ongoing evolution of artificial intelligence and its applications in our daily lives.

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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