Verification Technologies, Inc.
19Patents
0Active
19Granted
33Portfolio score
Filing activity: Jun 10, 1993 → Sep 23, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5521984A | System for registration, identification and verification of items utilizing unique intrinsic features | Physics | 175 | Expired |
| US5673338A | System for verification of unique items | Physics | 114 | Expired |
| US6589626B2 | Copy-protected optical media and method of manufacture thereof | Emerging Cross-Sectional Technologies | 75 | Expired |
| US6490030B1 | Portable product authentication device | Physics | 50 | Expired |
| US6638593B2 | Copy-protected optical media and method of manufacture thereof | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6707539B2 | Portable product authentication device | Physics | 33 | Expired |
| US6232124A | Automated fingerprint methods and chemistry for product authentication and monitoring | Physics | 31 | Expired |
| US6458595B1 | Automated fingerprint methods and chemistry for product authentication and monitoring | Physics | 29 | Expired |
| US6512580B1 | Method and apparatus for portable product authentication | Physics | 27 | Expired |
| US7124944B2 | Product packaging including digital data | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6952392B2 | Laser reactive dyes for DVD copy protection system | Physics | 15 | Expired |
| US6838145B2 | Copy-protected optical media and method of manufacture thereof | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7486790B1 | Method and apparatus for controlling access to storage media | Physics | 9 | Expired |
| US7176308B2 | Processes for preparing novel methylene blue derivative | Chemistry; Metallurgy | 6 | Expired |
| US7035200B2 | Optical disk copy-protection using an optically changeable security material | Physics | 4 | Expired |
| US7303803B2 | Copy-protected optical media and method of manufacture thereof | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7237720B2 | Product packaging including digital data | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7344823B2 | Transient optical state change materials useful in copy-protected compact discs | Physics | 0 | Expired |
| US7368221B2 | Changing light absorption by disruption of conjugation | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.