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:
Nov. 26, 2019
Filed:
Jun. 16, 2017
Tokyo Electron Limited, Tokyo, JP;
Nobuhiro Ogata, Kumamoto, JP;
Norihiro Ito, Kumamoto, JP;
Jiro Higashijima, Kumamoto, JP;
Yusuke Hashimoto, Kumamoto, JP;
Kazuhiro Aiura, Kumamoto, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
According to the present disclosure, both first and second cup bodies are brought into a state of being close to each other by lifting one of the first and second cup bodies. A first gap between a gap forming portion formed on the lower surface of a first protruding portion and the upper surface of a second protruding portion is narrower than a second gap between a portion of the first protruding portion where the gap forming portion is absent, and the upper surface of the second protruding portion. In this state, a cleaning liquid is supplied to the second gap. Since movement of the cleaning liquid that tends to flow radially outward is restricted by the first narrow gap, the entire area between the first and second protruding portions may be filled with the cleaning liquid so that the surface to be cleaned may be evenly cleaned.