Patent ID: 8667661

Claim:
A method of forming a housing for an electronic device, comprising: forming a multi-layered metal sandwich structure by bonding an exterior laminate layer to a first surface of a stainless steel layer and an interior laminate layer to a second surface of the stainless steel layer, wherein the exterior and interior laminate layers are formed from an anodizable material; masking a third surface of the stainless steel layer and a portion of the exterior and interior laminate layers using a mask, wherein the third surface of the stainless steel layer is not bonded to either the exterior or interior laminate layers, wherein the mask is configured to prevent exposure of the third surface from a subsequent anodizing process; anodizing un-masked portions of the exterior and interior laminate layers by exposing the multi-layered metal sandwich structure to an anodizing process, wherein the masked third surface of the stainless steel layer and the masked portion of the exterior and interior laminate layers are not anodized during the anodizing process; removing the mask from the third surface of the stainless steel layer and the exterior and interior laminate layers; and assembling an electronic component within the housing forming the electronic device.