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:
Jul. 16, 2019
Filed:
Aug. 01, 2017
Hitachi Kokusai Electric Inc., Tokyo, JP;
KOKUSAI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A substrate treatment apparatus includes: a reaction tube including a substrate treatment region in which a substrate is treated; and a furnace opening member disposed in a lower portion of the reaction tube. The reaction tube includes a flange formed to protrude outward in the lower portion of the reaction tube, and an extension portion formed to extend downward from a lower end of the flange, the extension portion being formed to have a thickness larger than a thickness of the reaction tube at a position corresponding to the substrate treatment region, and being configured to cover an inner circumferential surface of the furnace opening member. An inner surface of the extension portion protrudes more inward than an inner surface of the reaction tube at the position corresponding to the substrate treatment region.