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. 01, 2025
Filed:
Aug. 01, 2023
Tokyo Electron Limited, Tokyo, JP;
Koki Yoshimura, Kumamoto, JP;
Satoshi Nakakido, Kumamoto, JP;
TOKYO ELECTRON LIMITED, Tokyo, JP;
Abstract
A liquid processing apparatus includes: a stage; a cup that surrounds a substrate placed on the stage; a processing liquid supplier that supplies a processing liquid to the substrate; an exhaust port provided in the cup to exhaust the cup; an annular body provided inside the cup to surround the substrate and form a flow path for a gas flowing into the cup; a lifting mechanism that raises or lowers the annular body relative to the cup to perform a switching between a first state in which the annular body is located at a first relative height to perform a first exhaust and a second state in which the annular body is located at a second relative height to perform a second exhaust; and a drainage port that opens to an upstream side of the exhaust port in each of the first and second flow paths.