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For the Inventor, By the Inventor

Kanagawa, Japan

Hitachi Computer Peripherals Co., Ltd.


USPTO Granted Patents = 67

% Expired Patents = 61.2


Forward Citations = 718

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131 inventors (with patents filed for the assignee):

goldMedal Yoichi Mizuno (13 out of 49 patents)

silverMedal Akihiko Kanouda (11 out of 74 patents)

bronzeMedal Fumikazu Takahashi (11 out of 19 patents)

4.  Masahiro Hamaogi (11 out of 14 patents)

5.  Yoshihide Takahashi (11 out of 15 patents)

6.  Takae Shimada (7 out of 36 patents)

7.  Hiroyuki Shoji (7 out of 32 patents)

8.  Kimiaki Taniguchi (6 out of 13 patents)

9.  Kazuhiro Usami (6 out of 9 patents)

10.  Tomonori Murayama (6 out of 6 patents)

11.  Minehiro Nemoto (5 out of 18 patents)

12.  Masato Isogai (4 out of 22 patents)

13.  Takashi Amano (3 out of 29 patents)

14.  Satoru Masuyama (3 out of 6 patents)

15.  Norikazu Tokunaga (3 out of 32 patents)


Core Competencies:
Data Management
Encryption Key Management
Backup Methods
Storage Apparatus
Data Restoration
Bidirectional DC-DC Converter
Optical Disc Systems
Power Supply Units
Data Transfer Control
Data Archive Systems
Information Recording
Uninterruptible Power Supply

67 patents:

1. 9274723 - Storage apparatus and its control method (2016-03-01),
2. 8627026 - Storage apparatus and additional data writing method (2014-01-07),
3. 8590042 - Storage system, and encryption key management method and encryption key management program thereof (2013-11-19),
4. 8578112 - Data management system and data management method (2013-11-05),
5. 8380952 - Storage system and data storage method using storage system which decides size of data to optimize the total of data size transfer efficiency (2013-02-19),
6. 8378646 - Bidirectional dc-dc converter and control method thereof (2013-02-19),
7. 8326028 - Dropout color processing method and processing apparatus using same (2012-12-04),
8. 8271444 - Storage control device to backup data stored in virtual volume (2012-09-18),
9. 8259951 - Method and system for managing encryption key (2012-09-04),
10. 8219770 - Storage system and data management method (2012-07-10),
11. 8205054 - Hierarchical storage system (2012-06-19),
12. 8203855 - Complex inductor and power supply unit (2012-06-19),
13. 8145602 - Storage apparatus, data restoration method and computer system (2012-03-27),
14. 8130515 - Bi-directional DC-DC converter and method for controlling the same (2012-03-06),
15. 8118758 - Living body inspection apparatus (2012-02-21),
Company Overview
Hitachi Computer Peripherals Co., Ltd., based in Kanagawa, Japan, specializes in advanced data storage systems. The company focuses on developing innovative solutions for data management, including encryption key management and backup methods. Their expertise extends to storage apparatus and data restoration technologies, ensuring reliable data integrity and accessibility. Additionally, Hitachi is involved in the design of power supply units and optical disc systems, contributing to efficient energy management and data storage solutions in various industries.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

67 Patents

#51 in Kanagawa

#1,444 in Japan

#11,023 in the World

Kanagawa, JP
Kanagawa, Japan

Hitachi Computer Peripherals Co., Ltd.

Forward Citations = 718

131 inventors:

goldMedal Yoichi Mizuno (13 out of 49 patents)

silverMedal Akihiko Kanouda (11 out of 74 patents)

bronzeMedal Fumikazu Takahashi (11 out of 19 patents)

4.  Masahiro Hamaogi (11 out of 14 patents)

5.  Yoshihide Takahashi (11 out of 15 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Computer Peripherals Co., Ltd.. Retrieved from https://idiyas.com/company/hitachi-computer-peripherals-company

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

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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