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:
Aug. 09, 1994
Filed:
Jan. 18, 1991
John J Devilbiss, San Mateo, CA (US);
Steve Lugosi, Fremont, CA (US);
Robert G Ozarski, Livermore, CA (US);
ASM VT, Inc., Phoenix, AZ (US);
Abstract
An enhanced vertical thermal reactor system provides three isolated chambers including a wafer handling chamber, a process chamber including an elevator, and a cool down chamber, each sealed from the other. The sealing of these individual chambers, each from the other, has the effect of minimizing processing delays associated with the cooling process and the loading and unloading process to thereby improve the productivity of the furnace. The process chamber includes non-metallic media such that it can be operated in oxidation systems so that corrosive acids will not affect the process chamber operation.