Patent ID: 9342715
Filing Date: 2016-05-17
CPC Classification: B32B,C08B,C08J,C12M,C12P,D21H,G01N,G03C,G06K,G21K,H01J,Y02E

Claim Text:
1. A marked paper product comprising: a sheet comprising a cellulosic or lignocellulosic fibrous paper material, wherein the cellulosic or lignocellulosic fibrous material of an irradiated discrete, predefined portion of the sheet contains functional groups or a number thereof not present in the sheet prior to irradiation or in a non-irradiated portion of the cellulosic or lignocellulosic fibrous paper material, wherein the irradiated discrete portion of the sheet has been irradiated with a dose of ionizing radiation of at least 0.10 MRad sufficient to functionalize the cellulose or lignocellulose with said functional groups.