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

Henry Chang

Kyocera: 296 patents #2 of 3,732Top 1%
KWKyocera Wireless: 9 patents #9 of 163Top 6%
BHBaker Hughes Holdings: 1 patents #1,949 of 3,522Top 60%
San Diego, CA: #65 of 23,606 inventorsTop 1%
California: #226 of 386,348 inventorsTop 1%
Overall (All Time): #1,230 of 4,157,543Top 1%
306 Patents All Time

Issued Patents All Time

Showing 301–306 of 306 patents

Patent #TitleCo-InventorsDate
7302271 System and method for determining when to exit a wireless communication coverage network Amit Kalhan 2007-11-27
7292550 System and method for minimizing voice packet loss during a wireless communications device candidate frequency search (CFS) Douglas Dunn 2007-11-06
7231227 Systems and methods for blind source separation of wireless communication signals Amit Kalhan, Ramon Khalona, Doug Dunn, Richard J. Camarillo 2007-06-12
7221318 System and method for controlling antenna pattern Doug Dunn 2007-05-22
7085571 System and method for using geographical location to determine when to exit an existing wireless communications coverage network Amit Kalhan 2006-08-01
6973298 Location capable mobile handset Douglas Dunn 2005-12-06