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For the Inventor, By the Inventor

Kawasaki, Japan

Fijitsu Limited


USPTO Granted Patents = 25

% Expired Patents = 20.0


Forward Citations = 218

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65 inventors (with patents filed for the assignee):

goldMedal Shigeru Hashimoto (2 out of 59 patents)

silverMedal Takayuki Hasebe (1 out of 61 patents)

bronzeMedal Yoshihiro Kawasaki (1 out of 190 patents)

4.  Tomoyuki Akiyama (1 out of 53 patents)

5.  Osamu Tsuboi (1 out of 97 patents)

6.  Yuji Nomura (1 out of 86 patents)

7.  Satoshi Sato (1 out of 13 patents)

8.  Takeshi Yasuie (1 out of 40 patents)

9.  Koichi Maeda (1 out of 7 patents)

10.  Takumi Takeno (1 out of 6 patents)

11.  Takayuki Shibasaki (1 out of 29 patents)

12.  Takayoshi Ode (1 out of 129 patents)

13.  Yoshiyasu Sugimura (1 out of 31 patents)

14.  Satoshi Ueda (1 out of 93 patents)

15.  Taichi Sugiyama (1 out of 13 patents)


Core Competencies:
Optimization Apparatus
Communications System
Optical Transmission
Load Testing Apparatus
Micromirror Unit
Gas-Discharge Display
Call Control
Data Compression
Emergency Vehicle Selection
Memory Access
Chemical Vapor Deposition
Semiconductor Device

25 patents:

1. 11568204 - Optimization apparatus and control method thereof (2023-01-31),
2. 9036593 - Communications apparatus and communications system using multicarrier transmission mode (2015-05-19),
3. 8996694 - Computer-readable recording medium, information processing method, and information processing apparatus (2015-03-31),
4. 8412958 - Target device, method and system for managing device, and external device (2013-04-02),
5. 7443574 - Optical transmission system (2008-10-28),
6. 7137035 - Load testing apparatus, computer readable recording medium for recording load test program, fault diagnosis apparatus, and computer readable recording medium for recording fault diagnosis program (2006-11-14),
7. 7081792 - Operational amplifier, line driver, and liquid crystal display device (2006-07-25),
8. 6888301 - Gas-discharge display apparatus having optical filter selectively absorbing light of a wavelength equal to that of the light emission of the discharge gas (2005-05-03),
9. 6887396 - Micromirror unit and method of making the same (2005-05-03),
10. 6597909 - Apparatus and a method for performing a call control in a mobile communication system (2003-07-22),
11. 6536673 - Circuit for detecting presence or absence of proximity IC card device (2003-03-25),
12. 6392567 - Apparatus for repeatedly compressing a data string and a method thereof (2002-05-21),
13. 6332578 - Adapter (2001-12-25),
14. 6311124 - Device, method and system for selecting emergency vehicles (2001-10-30),
15. 6292870 - Information processing system in which memory devices and copies of tags are accessed in response to access requests issued from plurality of processing units (2001-09-18),
Company Overview
Fujitsu Limited is a leading Japanese information and communication technology company, specializing in a wide range of technology solutions and services. The company develops advanced computing systems, software, and IT infrastructure, focusing on areas such as cloud computing, artificial intelligence, and cybersecurity. With a strong commitment to innovation, Fujitsu plays a significant role in various sectors, including healthcare, finance, and manufacturing, providing tailored solutions to enhance operational efficiency and drive digital transformation.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

25 Patents

#36 in Kawasaki

#2,572 in Japan

#25,730 in the World

Kawasaki, JP
Kawasaki, Japan

Fijitsu Limited

Forward Citations = 218

65 inventors:

goldMedal Shigeru Hashimoto (2 out of 59 patents)

silverMedal Takayuki Hasebe (1 out of 61 patents)

bronzeMedal Yoshihiro Kawasaki (1 out of 190 patents)

4.  Tomoyuki Akiyama (1 out of 53 patents)

5.  Osamu Tsuboi (1 out of 97 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fijitsu Limited. Retrieved from https://idiyas.com/company/fijitsu

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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