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:
Jun. 20, 2023
Filed:
Aug. 10, 2021
Asm Ip Holding B.v., Almere, NL;
Adriaan Garssen, Doorn, NL;
ASM IP Holdings B.V., Almere, NL;
Abstract
A storage device for use with at least one batch furnace for batch treatment of wafers supported in a wafer boat is disclosed. The storage device comprises a cassette storage carousel for storing a plurality of wafer cassettes on rotatable platform stages. A carousel housing bounds a mini-environment chamber in which the platform stages are accommodated. A gas recirculation circuit of the storage device subsequently comprises a gas inlet channel, a gas inlet filter, the mini-environment chamber, a plurality of gas outlet openings in a bottom wall of the carousel housing, a plenum housing bounding a plenum chamber, a plenum chamber outlet, a gas circulation pump connecting the plenum chamber outlet to an inlet end of the gas inlet duct.