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For the Inventor, By the Inventor

Austin, TX, United States of America

David Yu Chang

USPTO Granted Patents = 52 

Average Co-Inventor Count = 2.6

ph-index = 18

Forward Citations = 1,556(Granted Patents)

Forward Citations (Not Self Cited) = 1,549(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Travis, TX (US) (2020 - 2021)
  • Austin, TX (US) (1996 - 2023)

Company Filing History:

goldMedal52 out of 164,197 
 
International Business Machines Corporation
 patents

Years Active: 1996-2023

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Areas of Expertise:
Access Management
Network Security
User Data Protection
Performance Optimization
Cloud Computing Security
Resource Management
Authorization Methods
Secure Connectivity
Wireless Network Security
Event Notification
Role-Based Access Control
Data Processing Systems
52 patents (USPTO):Explore Patents
1. 11637691 - Management of a size of a ledger (2023-04-25),
2. 11297066 - Constrained roles for access management (2022-04-05),
3. 11196774 - Network application security question detection and modification (2021-12-07),
4. 11176274 - Protecting user data (2021-11-16),
5. 11138188 - Performance optimization (2021-10-05),
6. 11032083 - Atomic transactional processing (2021-06-08),
7. 10929616 - Topic based conversation retrieval (2021-02-23),
8. 10897463 - Managing and securing manageable resources in stateless web server architecture using servlet filters (2021-01-19),
9. 10834122 - Prevention of majority attacks (2020-11-10),
10. 10650134 - Discreet user identification and multiple device modes of operations (2020-05-12),
11. 10592608 - Topic based conversation retrieval (2020-03-17),
12. 10382563 - Establishing cross-vendor secure connectivity in a shared computing environment (2019-08-13),
13. 10367806 - Managing and securing manageable resources in stateless web server architecture using servlet filters (2019-07-30),
14. 9722995 - Managing and securing manageable resources in stateless web server architecture using servlet filters (2017-08-01),
15. 9288214 - Authentication and authorization methods for cloud computing platform security (2016-03-15),

Title: The Innovative Mind of David Yu Chang

Introduction

David Yu Chang, a prolific inventor based in Austin, Texas, has made significant contributions to technology with an impressive portfolio of 52 patents. His work primarily focuses on advancements in blockchain technology and access management systems.

Latest Patents

Among his latest patents, one notable invention pertains to the "Management of a size of a ledger." This innovation involves a complex operation utilizing a blockchain network, where recipient nodes connect to source nodes to securely manage and store encrypted data blocks. Another significant patent is related to "Constrained roles for access management." This technique outlines a protocol that associates both granted and constrained permission sets to user profiles within an access management system, providing a sophisticated approach to managing user permissions effectively.

Career Highlights

David currently works at the International Business Machines Corporation (IBM), where he continues to develop solutions that enhance security and data management. His extensive experience and innovative mindset contribute to IBM's reputation as a leader in technology and research.

Collaborations

David collaborates with talented individuals such as Vishwanath Venkataramappa and John Yow-Chun Chang, further enriching the innovative atmosphere at IBM. Together, they focus on advancing technologies that pave the way for more secure and efficient systems.

Conclusion

David Yu Chang exemplifies the spirit of innovation, continually pushing the boundaries of technology. With his numerous patents and impactful contributions to the field, he remains an influential figure in the realm of technological advancement. His work not only enhances current systems but also inspires future developments that will shape the industry.

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