Forward Citations = 23

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11 inventors (with patents filed for the assignee):

Jun Kitahara (1 out of 37 patents)

Tomohisa Kohiyama (1 out of 21 patents)

Ichiro Ote (1 out of 9 patents)

4. Hisashi Matsumura (1 out of 8 patents)

5. Fumiaki Matsuura (1 out of 3 patents)

6. Sunao Hirata (1 out of 3 patents)

7. Seiji Oyama (1 out of 2 patents)

8. Takumi Soen (1 out of 2 patents)

9. Masahide Kouhei (1 out of 1 patent)

10. Kazuhiro Ushijima (1 out of 2 patents)

11. Tsutomu Koita (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5353403 - Graphic display processing apparatus and method for improving the speed (1994-10-04),

2. 5351040 - Control system for configuring ring LAN with improved reconfiguration (1994-09-27),

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#186 in Yokohama

#11,124 in Japan

Yokohama, Japan

Hitachisoftware Eng. Co., Ltd.

Forward Citations = 23

11 inventors:

Jun Kitahara (1 out of 37 patents)

Tomohisa Kohiyama (1 out of 21 patents)

Ichiro Ote (1 out of 9 patents)

4. Hisashi Matsumura (1 out of 8 patents)

5. Fumiaki Matsuura (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachisoftware Eng. Co., Ltd.. Retrieved from https://idiyas.com/company/hitachisoftware-eng-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]