DC

David Yu Chang

IBM: 52 patents #1,616 of 70,183Top 3%
Caterpillar: 20 patents #188 of 8,398Top 3%
📍 Edwards, IL: #1 of 19 inventorsTop 6%
🗺 Illinois: #368 of 84,256 inventorsTop 1%
Overall (All Time): #27,703 of 4,157,543Top 1%
72
Patents All Time

Issued Patents All Time

Showing 26–50 of 72 patents

Patent #TitleCo-InventorsDate
8769622 Authentication and authorization methods for cloud computing security Messaoud Benantar, John Y. Chang, Vishwanath Venkataramappa 2014-07-01
8572694 Integrated security roles Ching-Yun Chao 2013-10-29
8290163 Automatic wireless network password update John Y. Chang, Vishwanath Venkataramappa 2012-10-16
8201754 Fluid injector with thermal load control 2012-06-19
7946276 Protection device for a solenoid operated valve assembly Thomas G. Pusch, David E. Martin 2011-05-24
7874008 Dynamically configuring extensible role based manageable resources John Y. Chang, Vishwanath Venkataramappa 2011-01-18
7849836 Cooling feature for fuel injector and fuel system using same 2010-12-14
7731089 Interactive physical mail content management John Y. Chang, Vishwanath Venkataramappa 2010-06-08
7546640 Fine-grained authorization by authorization table associated with a resource Vishwanath Venkataramappa, Leigh Williamson 2009-06-09
7483914 Method and system for implementing an application-based naming system William M. Edwards, Russell Ley Newcombe 2009-01-27
7454786 Method for integrated security roles Ching-Yun Chao 2008-11-18
7318398 Engine valve actuation system 2008-01-15
7299288 System and method for concurrent security connections Derek Ho 2007-11-20
7228826 Internal combustion engine valve seating velocity control 2007-06-12
7210125 Method and system for application installation and management using an application-based naming system including aliases William M. Edwards, Ajay A. Apte, Leigh Williamson 2007-04-24
7203697 Fine-grained authorization using mbeans Vishwanath Venkataramappa, Leigh Williamson 2007-04-10
7178491 Control system and method for engine valve actuator 2007-02-20
7139918 Multiple secure socket layer keyfiles for client login support Robert Howard High, Jr. 2006-11-21
7076798 Securing non-EJB corba objects using an EJB security mechanism Robert Howard High, Jr., Nataraj Nagaratnam, Russell Ley Newcombe, Lori Jane Milhans VanGulick, Vishwanath Venkataramappa 2006-07-11
6997148 Engine valve actuator 2006-02-14
6996620 System and method for concurrent security connections Derek Ho 2006-02-07
6988471 Engine valve actuation system 2006-01-24
6957634 Engine valve actuator 2005-10-25
6950825 Fine grained role-based access to system resources Ching-Yun Chao, Hyen Vui Chung, Carlton Keith Mason, Vishwanath Venkataramappa, Leigh Williamson 2005-09-27
6912718 EVENT NOTIFICATION CHANNEL BETWEEN SUPPLIER AND CONSUMER OBJECTS IN OBJECT ORIENTED PROGRAMMING SYSTEM WITH PROXY CONSUMER OBJECTS TO MAINTAIN UNINTERRUPTED EVENT TRANSMISSION DURING CONSUMER OBJECT OFF LINE MAINTENANCE John S. Wang 2005-06-28