Takao Yamashita

This inventor holds 12 USPTO granted patents and 2 published patent applications. Top assignee: Nippon Telegraph and Telephone Corporation. Active years: 2022-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takao Yamashita. Retrieved from https://idiyas.com/inventor/takao-yamashita

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

Calculating rank

USPTO Granted Patents = 12 (Patent Applications = 2)

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 2

Forward Citations = 6(Granted Patents)

Company Filing History:

12 out of 5,300

Nippon Telegraph and Telephone Corporation

patents

Years Active: 2022-2025

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12244727 - User credential control system and user credential control method (2025-03-04),

2. 12206794 - User information management system, user information management method, user agent and program (2025-01-21),

3. 12155655 - Owner identity confirmation system and owner identity confirmation method (2024-11-26),

4. 12120248 - Owner identity confirmation system, terminal and owner identity confirmation method (2024-10-15),

5. 12120247 - Owner identity confirmation system, certificate authority server and owner identity confirmation method (2024-10-15),

6. 12022004 - Terminal registration system and terminal registration method (2024-06-25),

7. 11956238 - Authorization system and authorization method (2024-04-09),

8. 11917076 - Terminal registration system and terminal registration method (2024-02-27),

9. 11721148 - Authorization system, management server and authorization method (2023-08-08),

10. 11533186 - Proprietor's identity confirmation system, terminal management server, and proprietor's identity confirmation method (2022-12-20),

11. 11483159 - Terminal registration system and terminal registration method (2022-10-25),

12. 11424915 - Terminal registration system and terminal registration method with reduced number of communication operations (2022-08-23),

Title: Innovations by Takao Yamashita: A Glimpse into His Patented Contributions

Introduction: Takao Yamashita, an accomplished inventor based in Tokyo, Japan, has made significant contributions to the field of technology through his innovative ideas. With a remarkable portfolio of 12 patents, Yamashita is known for his pioneering work in user credential control systems and user information management.

Latest Patents: Two of Takao Yamashita's latest patents include a user credential control system and a user information management system. The user credential control system involves an access control server that manages user credentials through a token issuing unit, ensuring secure communication with service provider servers based on company names and service types. The system also features a policy registration unit for managing access authority and a notification reception unit that updates service providers when user credentials change. Meanwhile, the user information management system employs a user agent for securely storing private and public keys along with user information. This system enhances security by providing a mechanism for signing service documents and verifying signature authenticity.

Career Highlights: Takao Yamashita has developed a distinguished career at the Nippon Telegraph and Telephone Corporation, contributing to advancements in network technology and security. His work is essential in creating more secure systems for user authentication and data management, showcasing his role as a leading figure in technological innovations.

Collaborations: Throughout his career, Takao has collaborated with esteemed colleagues such as Yoshihiko Omori and Hideo Nishimura. These partnerships have played a crucial role in the successful development and realization of his innovative ideas, allowing for a broader impact on the technology landscape.

Conclusion: Takao Yamashita stands out as a significant inventor in the realm of technology, with a focus on enhancing user security through innovative systems and methods. His patents not only reflect his expertise but also represent an ongoing dedication to improving how user credentials and information are managed in an increasingly digital world.

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]

2 patents pending: