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:
May. 25, 2021
Filed:
Mar. 18, 2019
Screen Holdings Co., Ltd., Kyoto, JP;
Abstract
A substrate processing method includes a substrate holding step of holding a substrate by a substrate holding unit, a chemical liquid supplying step of supplying a chemical liquid to a main surface of the substrate while rotating the substrate around a rotational axis passing through a central portion of the substrate, a foreign matter detecting step of detecting foreign matter, contained in the chemical liquid expelled from the substrate, in parallel with the chemical liquid supplying step, and a flow destination switching step of switching, based on the detection of the foreign matter by the foreign matter detecting step, a flow destination of the chemical liquid expelled from the substrate from a drain piping to a recovery piping during the chemical liquid supplying step.