US Patent 9005353 Getter structure including a gas-permeable material description

A getter structure including at least one portion of getter material at least one face of which is positioned against at least one portion of gas-permeable material such that said portion of getter material is able to achieve a gaseous absorption and/or adsorption at least by said face through at least said portion of gas-permeable material, and in which the portion of gas-permeable material includes one or more channels made at the level of a face of said portion of gas-permeable material which is in contact with the portion of getter material, where the portion of getter material is able to achieve a gaseous absorption, or a gaseous adsorption, or both a gaseous absorption and a gaseous adsorption, via the channel or channels.