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Kanagawa, Japan

Hitachi Computer Engineering Co., Ltd.

USPTO Granted Patents = 61

Forward Citations = 2,008

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193 inventors (with patents filed for the assignee):

Tomoo Aoyama (7 out of 9 patents)

Akio Kojima (4 out of 4 patents)

Mikito Ogata (3 out of 22 patents)

4. Masato Hirai (3 out of 8 patents)

5. Hiroshi Murayama (3 out of 11 patents)

6. Fujio Wakui (3 out of 6 patents)

7. Hidenori Yamada (3 out of 3 patents)

8. Yoshihisa Tsuji (3 out of 3 patents)

9. Hirofumi Yamashita (2 out of 59 patents)

10. Kenji Matsumoto (2 out of 34 patents)

11. Shigeru Kaga (2 out of 3 patents)

12. Shinjiro Shiraki (2 out of 7 patents)

13. Toshiyuki Yamada (2 out of 4 patents)

14. Masashi Fukuda (2 out of 4 patents)

15. Hideaki Sasaki (2 out of 33 patents)

Core Competencies:

Data Processing

Vector Processing

Wireless Communication

Optical Disk Control

Magnetic Recording

POS Systems

Multi-Chip Modules

Printing Control

Network Synchronization

Semiconductor Devices

Virtual Addressing

61 patents: Sort by Forward Citations

1. 6148415 - Backup switching control system and method (2000-11-14),

2. 6014406 - Frequency-hopped wireless communication system and mobile wireless (2000-01-11),

3. 5982762 - Wireless LAN system, base station device and wireless terminal device (1999-11-09),

4. 5842042 - Data transfer control method for controlling transfer of data through a (1998-11-24),

5. 5761435 - Multiprocessor bridge having storage for spanning tree operation mode (1998-06-02),

6. 5745972 - Method of producing parts/substrate assemblies (1998-05-05),

7. 5745444 - Method of controlling recording information on an optical disk using (1998-04-28),

8. 5710903 - Data processing system provided with an address translation lookaside (1998-01-20),

9. 5671354 - Method of assisting server access by use of user authentication (1997-09-23),

10. 5638012 - Write driver circuit (1997-06-10),

11. 5623607 - Data transfer control method for controlling transfer of data through a (1997-04-22),

12. 5615316 - Printing control method and apparatus (1997-03-25),

13. 5603003 - High speed file access control method and computer system including a (1997-02-11),

14. 5548724 - File server system and file access control method of the same (1996-08-20),

15. 5543607 - Self check-out system and POS system (1996-08-06),

Hitachi Computer Engineering Co., Ltd., based in Kanagawa, Japan, specializes in advanced data processing systems and related technologies. The company focuses on a range of core areas including vector processing, wireless communication, and optical disk control. Additionally, it develops solutions for magnetic recording, point-of-sale systems, multi-chip modules, and printing control. With a commitment to innovation, Hitachi Computer Engineering plays a significant role in enhancing data management and processing capabilities across various industries.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

61 Patents

#56 in Kanagawa

#1,511 in Japan

#11,907 in the World

Kanagawa, Japan

Hitachi Computer Engineering Co., Ltd.

Forward Citations = 2,008

193 inventors:

Tomoo Aoyama (7 out of 9 patents)

Akio Kojima (4 out of 4 patents)

Mikito Ogata (3 out of 22 patents)

4. Masato Hirai (3 out of 8 patents)

5. Hiroshi Murayama (3 out of 11 patents)

Please report any incorrect information to [email protected]

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