| 10311215 |
Secure recording and rendering of encrypted multimedia content |
Joseph D. Steele |
2019-06-04 |
| 9971879 |
Secure recording and rendering of encrypted multimedia content |
Joseph D. Steele |
2018-05-15 |
| 9800416 |
Distributed validation of digitally signed electronic documents |
Isak Tenenboym, Philip Levy, Marc T. Kaufman |
2017-10-24 |
| 9276749 |
Distributed validation of digitally signed electronic documents |
Isak Tenenboym, Philip Levy, Marc T. Kaufman |
2016-03-01 |
| 8924857 |
Multi-dimensional rights scheme |
— |
2014-12-30 |
| 8683600 |
Print policy commands |
— |
2014-03-25 |
| 8683605 |
Long-term validation of a digital signature status indicator |
Isak Tenenboym, Philip Levy, Marc T. Kaufman |
2014-03-25 |
| 8363882 |
User discernible watermarking |
Chris Hock |
2013-01-29 |
| 8145909 |
Digitally signing an electronic document using seed data |
Sunil Agrawal, Andrei Sheretov |
2012-03-27 |
