IDiyas

For the Inventor, By the Inventor

Yokohama, Japan

Satoru Tezuka

USPTO Granted Patents = 16

Average Co-Inventor Count = 6.1

ph-index = 11

Forward Citations = 485(Granted Patents)


Company Filing History:

goldMedal16 out of 42,485 
 
Hitachi, Ltd.
 patents

Years Active: 1996-2008

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16 patents (USPTO):Explore Patents
1. 7409553 - Public key certificate generation method, validation method and apparatus thereof (2008-08-05),
2. 7409551 - Certificate validity authentication method and apparatus (2008-08-05),
3. 7080251 - Certificate validity authentication method and apparatus (2006-07-18),
4. 6789090 - Virtual network displaying system (2004-09-07),
5. 6735626 - Network managing method and system (2004-05-11),
6. 6732170 - Network managing method, medium and system (2004-05-04),
7. 6327658 - Distributed object system and service supply method therein (2001-12-04),
8. 6047320 - Network managing method and system (2000-04-04),
9. 6018769 - Integrated network installation system (2000-01-25),
10. 5999181 - Network development support system (1999-12-07),
11. 5901288 - Network operating information system having design device and automatic (1999-05-04),
12. 5845078 - Network integrated construction system, method of installing network (1998-12-01),
13. 5764911 - Management system for updating network managed by physical manager to (1998-06-09),
14. 5687315 - Support system for constructing an integrated network (1997-11-11),
15. 5619640 - Network development support system (1997-04-08),

Title: Satoru Tezuka: Innovator in Public Key Certificate Technology

Introduction

Satoru Tezuka is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of public key certificate technology, holding a total of 16 patents. His work focuses on enhancing the efficiency and security of certificate validity authentication methods.

Latest Patents

One of his latest patents is a "Certificate validity authentication method and apparatus." This invention shortens the time period required for the authentication of the validity of a public key certificate. The method involves a certificate validity authentication center that periodically searches for and verifies paths extending from a bridge certification authority to individual terminal admitting certification authorities. It registers verified paths in a path database, ensuring that the subject certificate is deemed valid only when both paths are registered.

Another notable patent is the "Public key certificate generation method, validation method and apparatus thereof." This method includes steps for sending a certificate issuing request to the issuing authority, generating a public key certificate, and ensuring that the information guaranteed by the registration authority is included in the certificate. This process enhances the reliability of public key certificates.

Career Highlights

Satoru Tezuka is currently employed at Hitachi, Ltd., where he continues to innovate in the field of technology. His work has had a significant impact on the security of digital communications and the management of public key infrastructures.

Collaborations

Throughout his career, Satoru has collaborated with notable colleagues such as Shigeru Miyake and Kenichi Kihara. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

Satoru Tezuka is a distinguished inventor whose work in public key certificate technology has paved the way for more secure digital communications. His innovative patents and contributions to Hitachi, Ltd. highlight his importance in the field of technology.

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