Forward Citations = 165

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28 inventors (with patents filed for the assignee):

Osamu Takahashi (1 out of 39 patents)

Tetsuya Nakagawa (1 out of 30 patents)

Hirotada Ueda (1 out of 69 patents)

4. Nobuyuki Moriwaki (1 out of 30 patents)

5. Atsushi Kiuchi (1 out of 30 patents)

6. Katsuhiro Shimohigashi (1 out of 60 patents)

7. Chisato Konno (1 out of 12 patents)

8. Shigeo Takeuchi (1 out of 20 patents)

9. Kenji Kaneko (1 out of 28 patents)

10. Toshiaki Masuhara (1 out of 42 patents)

11. Yukio Umetani (1 out of 7 patents)

12. Yoshimune Hagiwara (1 out of 31 patents)

13. Jun Ishida (1 out of 4 patents)

14. Yoichi Sato (1 out of 13 patents)

15. Tohru Shonai (1 out of 12 patents)

6 patents: Sort by Forward Citations

1. 5359572 - Semiconductor storage device (1994-10-25),

2. 4819161 - Method of automatic generation of a computer for numerical simulation of (1989-04-04),

3. 4809206 - Information processing apparatus (1989-02-28),

4. 4752873 - Data processor having a plurality of operating units, logical registers, (1988-06-21),

5. 4747082 - Semiconductor memory with automatic refresh means (1988-05-24),

6. 4725742 - Semiconductor integrated circuit having a tree circuit (1988-02-16),

Company Overview

Hitachi, Ltd. is a Japanese multinational conglomerate company headquartered in Chiyoda, Tokyo, Japan. It is the parent company of the Hitachi Group and forms part of the DKB Group of companies. VLSI Engineering Corp. is a subsidiary of Hitachi and specializes in the development and manufacturing of very-large-scale integration (VSLI) technology.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#2 in Kodaira

#5,989 in Japan

Kodaira, Japan

Hitachi, Vlsi Eng. Corp.

Forward Citations = 165

28 inventors:

Osamu Takahashi (1 out of 39 patents)

Tetsuya Nakagawa (1 out of 30 patents)

Hirotada Ueda (1 out of 69 patents)

4. Nobuyuki Moriwaki (1 out of 30 patents)

5. Atsushi Kiuchi (1 out of 30 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi, Vlsi Eng. Corp.. Retrieved from https://idiyas.com/company/hitachi-vlsi-eng

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]