Pullen; Walter D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pullen; Walter D..The latest application filed is for "tamper-resistant text stream watermarking".
- Pullen; Walter D. - Seattle WA
| Patent | Date |
|---|---|
| Tamper-resistant text stream watermarking Grant 7,894,630 - Pullen , et al. February 22, 2 | 2011-02-22 |
| Tamper-Resistant Text Stream Watermarking App 20100278380 - Pullen; Walter D. ; et al. | 2010-11-04 |
| File blocking mitigation Grant 7,797,742 - Sheldon , et al. September 14, 2 | 2010-09-14 |
| Tamper-resistant text stream watermarking Grant 7,760,903 - Pullen , et al. July 20, 2 | 2010-07-20 |
| File Blocking Mitigation App 20080209138 - Sheldon; Elizabeth Jeanne ; et al. | 2008-08-28 |
| Tamper-resistant text stream watermarking App 20070047758 - Pullen; Walter D. ; et al. | 2007-03-01 |
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