Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
WC

Walter Cooper Chastain — 130 Patents

ATAT&T: 187 patents #31 of 18,772Top 1%
AUAtlassian Us: 2 patents #65 of 412Top 20%
Atlanta, GA: #13 of 7,950 inventorsTop 1%
Georgia: #46 of 35,610 inventorsTop 1%
Overall (All Time): #8,378 of 4,157,543Top 1%
130 Patents All Time

Issued Patents All Time

Showing 126–130 of 130 patents

Patent #TitleCo-InventorsDate
8959331 Systems for provisioning universal integrated circuit cards Clifton Ashman Campbell, Stephen Emille Chin, David Harber, Brian Keith Rainer, David K. Smith +1 more 2015-02-17
8948752 System and method of providing IMS services to users on originating non IMS devices and other devices that do not have a previous relationship with the user Steven A. Siegel, Siroos K. Afshar, Robert Epley, Karen M. McCourt, Arnold Chester McQuaide, Jr. +1 more 2015-02-03
8898769 Methods for provisioning universal integrated circuit cards Clifton Ashman Campbell, Stephen Emille Chin, David Harber, Brian Keith Rainer, David K. Smith +1 more 2014-11-25
8767717 System and method of providing IMS services to users on terminating non IMS devices Steven A. Siegel, Siroos K. Afshar, Robert Epley, Karen M. McCourt, Arnold Chester McQuaide, Jr. +2 more 2014-07-01
8472431 System and method of providing IMS services to users on terminating non IMS devices Steven A. Siegel, Siroos K. Afshar, Robert Epley, Karen M. McCourt, Arnold Chester McQuaide, Jr. +2 more 2013-06-25