Material distribution apparatus
US7636847B2 · kind B2 · utility
3Cited by
24References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2002 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Feb 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A material distribution apparatus, comprising a material server including a data introduction processor operable to introduce data into material to be distributed with the effect that the introduced data is at least difficult to perceive in the material, and a material impairment processor operable to introduce a reversible impairment into the material. A communications network distributes the impaired material to at least one client processor which includes an impairment reversing processor operable to reverse the impairment of the material to produce client restored material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.