Patent ID: 8496133
Filing Date: 2013-07-30
Classification: G03F,H01L

Abstract:
1. A mask blank container for housing a mask blank with a resist film, comprising: a container body for receiving the mask blank, the container body having an opening: a cap member to be put on the container body for closing the opening; and a fixing member adapted to fix the container body and the cap member to each other when the cap member is put on the container body; wherein the container body and the cap member have fitting portions made of a resin material and fitted to each other, respectively; wherein the container body has a side wall portion formed slightly winded outward, the side wall portion of the container body having an engaging portion which is formed at a part of a lower end of the side wall of the container body by one of depressing the part inward and cutting out the part; wherein the cap member has a side wall portion formed slightly winded outward, the side wall portion of the cap member having an engaging portion which is formed at a part of an upper end of the side wall portion of the cap member by one of depressing the part inward or cutting out the part; when the cap member is put on the container body, the side wall portion of the cap member is flush with the side wall portion of the container body; wherein the fixing member comprises: a first member having an engaging portion to be engaged with the engaging portion of the cap member; and a second member rotatably connected to the first member, the second member having an S-shaped body with a distal engaging portion to be engaged with the engaging portion of the container body; wherein a distance between the engaging portions of the first and the second members is variable, and wherein the fixing member is removable from the container body and the cap member.