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For the Inventor, By the Inventor

Kawasaki, Japan

Masahiko Takenaka

This inventor holds 80 USPTO granted patents and 23 published patent applications and 18 EPO patents, primarily in Cybersecurity Technologies (CPC class H04L9-0869). Top assignees: Fujitsu Corporation, Fujitsu Advanced Engineering Limited, Fujitsu Semiconductor Limited. Active years: 1996-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiko Takenaka. Retrieved from https://idiyas.com/inventor/masahiko-takenaka

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 80 

% Patents Active = 37.5

 

Average Co-Inventor Count = 3.2

ph-index = 12

Forward Citations = 838(Granted Patents)

Forward Citations (Not Self Cited) = 806(Dec 10, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal79 out of 39,378 
 
Fujitsu Corporation
 patents
silverMedal2 out of 8 
 
Fujitsu Advanced Engineering Limited
 patents
bronzeMedal1 out of 1,674 
 
Fujitsu Semiconductor Limited
 patents
where one patent can have more than one assignee

Years Active: 1996-2020

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Areas of Expertise:
Software Attack Detection
Mutual Authentication
Cyber Attacks
Encryption Processing
Information Processing
Network Transmission
Cryptographic Processing
Random Number Generation
Document Verification
Key Generation
Communication Control
Log Analysis
80 patents (USPTO):Explore Patents
1. 10872147 - Software attack detection device, non-transitory computer-readable storage medium, and software attack detection method (2020-12-22),
2. 10425227 - Computer-readable recording medium, shared key generation method, and information processing terminal (2019-09-24),
3. 10419430 - Mutual authentication method and authentication apparatus (2019-09-17),
4. 10348743 - Identification method and information processing device (2019-07-09),
5. 10339314 - Device, method and storage medium for terminating operation of software that is not successfully verified (2019-07-02),
6. 10291630 - Monitoring apparatus and method (2019-05-14),
7. 10284572 - Management method, management device, and management program (2019-05-07),
8. 10009271 - Routing method and network transmission apparatus (2018-06-26),
9. 9942123 - Device and method for monitoring communication in network including a plurality of nodes (2018-04-10),
10. 9860060 - Information processing method, computer-readable recording medium, and information processing apparatus (2018-01-02),
11. 9813451 - Apparatus and method for detecting cyber attacks from communication sources (2017-11-07),
12. 9772819 - Apparatus and method for generating physical random numbers (2017-09-26),
13. 9749135 - Encrypting device, encrypting method, and recording medium (2017-08-29),
14. 9729324 - Semiconductor integrated circuit, authentication system, and authentication method (2017-08-08),
15. 9712499 - Method and apparatus for cryptographic processing (2017-07-18),

Title: **Masahiko Takenaka: Innovator in Software Security**

Introduction

Masahiko Takenaka, based in Kawasaki, Japan, is a distinguished inventor known for his significant contributions to the field of software security. With an impressive portfolio of 80 patents, Takenaka has consistently pushed the boundaries of innovation, particularly in the realm of software attack detection and information processing technology.

Latest Patents

Among Takenaka's latest innovations are two notable patents that highlight his expertise. The first patent revolves around a **Software Attack Detection Device**, which includes a memory and a processor capable of executing processes to generate notifications in response to countermeasures applied to programs to mitigate vulnerabilities to software attacks. This device monitors generated notifications to determine the presence of a software attack.

The second patent comprises a **Computer-Readable Recording Medium, Shared Key Generation Method, and Information Processing Terminal**. This information processing terminal uniquely generates a shared key using a public key cryptosystem and an algorithm associated with elliptic curves. It calculates values that lead to the final exponentiation, ultimately facilitating enhanced security in key management.

Career Highlights

Masahiko Takenaka has had a fruitful career with esteemed organizations, including Fujitsu Corporation and Fujitsu Advanced Engineering Limited. His work at these companies has allowed him to engage with cutting-edge technologies and advance his research in software security.

Collaborations

Throughout his career, Takenaka has collaborated with several talented individuals, including his coworkers Tetsuya Izu and Naoya Torii. These collaborations have contributed to the development of innovative solutions in the competitive landscape of technology and software security.

Conclusion

Masahiko Takenaka's journey as an inventor demonstrates a profound commitment to advancing technology and enhancing security measures in software. His patents not only reflect his ingenuity but also his dedication to creating a safer digital environment. Through continuous innovation, Takenaka sets a benchmark in the field, inspiring future advancements in software technology.

Profile summary based on public USPTO records.
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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