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:
Oct. 13, 1998
Filed:
May. 22, 1996
Tokyo Electron Limited, Tokyo, JP;
Abstract
A boat includes a boat body, a top plate mounted on one end and a bottom plate mounted on the other end of the boat body. The boat body has a prop section and the prop section has a plurality of support portions provided parallel to each other along its longitudinal direction and each having a substantially circular arc-like configuration. The support portion has an opening at a front side to allow the forward end of an arm to be entered into an inside of the support portion to transfer a wafer W. Another opening is provided in a back section of a prop section at an area corresponding to the opening to allow the forward end of the arm to extend through it. The support portion supports the wafer W with the wafer edge portion set on its rest surface. The support portion and its rest surface are so formed as to have a substantially circular arc-configuration. By doing so, the rest surface of the support portion supports the wafer edge portion over as greater a length as possible. The rest surface of the support portion has its flatness set to be not more than 0.1 mm. When the wafer W is placed on the rest surface, the rear surface of the wafer edge portion is set substantially in face contact with the rest surface of the support portion.