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Yokohama, Japan

Fujitsu Semiconductor Limited

USPTO Granted Patents = 1,674

% Expired Patents = 62.5

EPO Patents = 231

Trademarks = 2

Forward Citations = 5,185

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1,298 inventors (with patents filed for the assignee):

Kouichi Nagai (54 out of 80 patents)

Wensheng Wang (51 out of 71 patents)

Taiji Ema (44 out of 171 patents)

4. Kenichi Watanabe (43 out of 89 patents)

5. Masashi Shima (31 out of 49 patents)

6. Naoyoshi Tamura (30 out of 50 patents)

7. Yosuke Shimamune (24 out of 41 patents)

8. Kazushi Fujita (22 out of 24 patents)

9. Toru Anezaki (20 out of 40 patents)

10. Takao Nishimura (18 out of 28 patents)

11. Noriyoshi Shimizu (17 out of 50 patents)

12. Hiroyuki Ogawa (16 out of 174 patents)

13. Akira Katakami (16 out of 30 patents)

14. Hideyuki Kojima (16 out of 48 patents)

15. Naoto Adachi (15 out of 30 patents)

Core Competencies:

Semiconductor Device

Fabrication Method

Memory Control

Multicore Architecture

Rectifier Circuit

Power Switching

Ferroelectric Memory

Integrated Circuit

Silicon Layer

Insulating Layers

Transistor Array

Scheduling

1,674 patents: Sort by Forward Citations

1. 10840130 - Semiconductor device and semiconductor device fabrication method (2020-11-17),

2. 10803910 - Semiconductor storage device and read method thereof (2020-10-13),

3. 10740225 - Semiconductor memory having radio communication function and write control method (2020-08-11),

4. 10546773 - Semiconductor device and semiconductor device fabrication method (2020-01-28),

5. 10432107 - Rectifier circuit and electronic device (2019-10-01),

6. 10360415 - Semiconductor memory having radio communication function and application control method (2019-07-23),

7. 10270341 - Regulator circuit and semiconductor integrated circuit device (2019-04-23),

8. 10269813 - Semiconductor device and method of manufacturing the same (2019-04-23),

9. 10268609 - Resource management in a multicore architecture (2019-04-23),

10. 10192866 - Semiconductor device and manufacturing method of semiconductor device (2019-01-29),

11. 10090201 - Method of manufacturing semiconductor device reducing variation in thickness of silicon layer among semiconductor wafers (2018-10-02),

12. 10012912 - Exposure method, exposure apparatus, and photomask (2018-07-03),

13. 9991270 - Semiconductor device and manufacturing method for same (2018-06-05),

14. 9947575 - Semiconductor device and semiconductor device fabrication method (2018-04-17),

15. 9917092 - Semiconductor device and method of manufacturing the same (2018-03-13),

Company Overview

Fujitsu Semiconductor Limited, headquartered in Yokohama, Japan, specializes in the development and manufacturing of advanced semiconductor devices. The company focuses on core technology areas including semiconductor fabrication methods, memory control systems, and multicore architectures. Their innovations extend to power switching technologies, rectifier circuits, and ferroelectric memory, positioning them as a key player in the semiconductor industry. Fujitsu Semiconductor is dedicated to delivering high-performance integrated circuits that meet the evolving demands of various applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

1,674 Patents

#3 in Yokohama

#140 in Japan

#602 in the World

Yokohama, Japan

Fujitsu Semiconductor Limited

Forward Citations = 5,185

1,298 inventors:

Kouichi Nagai (54 out of 80 patents)

Wensheng Wang (51 out of 71 patents)

Taiji Ema (44 out of 171 patents)

4. Kenichi Watanabe (43 out of 89 patents)

5. Masashi Shima (31 out of 49 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fujitsu Semiconductor Limited. Retrieved from https://idiyas.com/company/fujitsu-semiconductor

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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