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. 01, 2002
Filed:
Nov. 03, 1998
Michito Sato, Vancouver, WA (US);
Hiroaki Fukabori, Takasaki, JP;
Yukio Mukaino, Nishishirakawa-gun, JP;
Seh America, Inc., Vancouver, WA (US);
Abstract
An apparatus for transferring wafers between wafer holders such as wafer cassettes, etching drums and the like includes a tank for containing a liquid transfer medium in which the wafers can be transferred. The apparatus includes a wafer transfer unit that can transfer a plurality of wafers such as semiconductor wafers between wafer holders, and maintain the wafers in a desired relative orientation during transfer. For example, the wafers can be maintained in a parallel relationship. The apparatus can be used to automatically transfer wafers to etching drums without cross-indexing of the wafers and without manual handling of the wafers.