Optical media, read inhibiting agents and methods of making and using same
US7698716B2 · kind B2 · utility
1Cited by
0References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2005 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Nov 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2579
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatuses, products, devices and methods of manufacture consistent with the invention include optically readable media with at least one mechanism, chemical, agent, and/or process for limiting the time period that at least a portion of encoded information can be read and/or accessed by an optical beam and/or reader capable of reading the encoded information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.