For the Inventor, By the Inventor

Enter assignee name

Hitachi Chubu Software, Ltd.

USPTO Granted Patents = 13

Forward Citations = 605

Loading Chart...

Loading Chart...

34 inventors (with patents filed for the assignee):

Kazuo Takaragi (5 out of 67 patents)

Hiroshi Matsumoto (5 out of 24 patents)

Ichiro Ote (3 out of 9 patents)

4. Jun Kitahara (2 out of 37 patents)

5. Yasuko Fukuzawa (2 out of 22 patents)

6. Tomohisa Kohiyama (2 out of 21 patents)

7. Seiichi Susaki (2 out of 16 patents)

8. Tsutomu Nakamura (2 out of 30 patents)

9. Yuji Miyagawa (2 out of 6 patents)

10. Sunao Hirata (2 out of 3 patents)

11. Seiji Oyama (2 out of 2 patents)

12. Takumi Soen (2 out of 2 patents)

13. Yukihiro Seki (1 out of 20 patents)

14. Ryuichi Hattori (1 out of 22 patents)

15. Tsunehiro Tobita (1 out of 27 patents)

13 patents: Sort by Forward Citations

1. 6105138 - Method and apparatus for controlling electric source in information (2000-08-15),

2. 5781434 - Control system for communication apparatus (1998-07-14),

3. 5708827 - Spread sheet calculation method and apparatus by extracting an area to (1998-01-13),

4. 5583985 - Graphic display processing apparatus for improving speed and efficiency (1996-12-10),

5. 5572701 - Bus snoop method and apparatus for computer system having CPU with cache (1996-11-05),

6. 5465299 - Electronic document processing system and method of forming digital (1995-11-07),

7. 5379423 - Information life cycle processor and information organizing method using (1995-01-03),

8. 5353403 - Graphic display processing apparatus and method for improving the speed (1994-10-04),

9. 5351294 - Limited broadcast system (1994-09-27),

10. 5309516 - Group cipher communication method and group cipher communication system (1994-05-03),

11. 5222139 - Cryptographic method and apparatus (1993-06-22),

12. 5218638 - Encipher method and decipher method (1993-06-08),

13. 4984195 - Extended bus controller (1991-01-08),

Company Overview

Hitachi Chubu Software, Ltd. is a prominent technology company based in Aichi, Japan, specializing in software development and IT solutions. The organization focuses on delivering innovative software applications and services that enhance operational efficiency across various sectors. With a commitment to advancing technology, Hitachi Chubu Software engages in research and development in areas such as cloud computing, data analytics, and system integration, catering to both domestic and international markets.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#81 in Aichi

#3,752 in Japan

#45,081 in the World

Hitachi Chubu Software, Ltd.

Forward Citations = 605

34 inventors:

Kazuo Takaragi (5 out of 67 patents)

Hiroshi Matsumoto (5 out of 24 patents)

Ichiro Ote (3 out of 9 patents)

4. Jun Kitahara (2 out of 37 patents)

5. Yasuko Fukuzawa (2 out of 22 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Chubu Software, Ltd.. Retrieved from https://idiyas.com/company/hitachi-chubu-software

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]

Loading…