The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2009
Filed:
Jun. 01, 2007
Toshitsugu Yajima, Saitama, JP;
Toshiyuki Kamada, Saitama, JP;
Toshitsugu Yajima, Saitama, JP;
Toshiyuki Kamada, Saitama, JP;
Shin-Etsu Polymer Co., Ltd, Tokyo, JP;
Abstract
A wafer storage container includes an outer peripheral portion located outside an outer peripheral edge of a wafer, and a placing portion which extends from a position lower than an uppermost surface of the outer peripheral portion to a radial inside of the wafer and on which the wafer is placed at a position lower than the uppermost surface of the outer peripheral portion. The placing portion includes a first inclined surface which descends toward the radial inside of the wafer and can be brought into contact with only the outer peripheral edge of the wafer when the wafer is placed and a second inclined surface which is on a rear side of the first inclined surface, ascends toward the radial inside of the wafer, and can be brought into contact with only the outer peripheral edge of a lower wafer when a plurality of wafer storage containers are stacked.