JB

John Kennedy Barr

DI Digimarc: 3 patents #86 of 189Top 50%
Overall (All Time): #1,537,875 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8345316 Layered security in digital watermarking Brett A. Bradley, Brett T. Hannigan 2013-01-01
8190901 Layered security in digital watermarking Brett A. Bradley, Brett T. Hannigan, Adnan M. Alattar, Robert T. Durst, Jr. 2012-05-29
7519819 Layered security in digital watermarking Brett A. Bradley, Brett T. Hannigan 2009-04-14