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. 30, 2022
Filed:
Jun. 12, 2019
Tokyo Electron Limited, Tokyo, JP;
TOKYO ELECTRON LIMITED, Tokyo, JP;
Abstract
A substrate processing apparatus includes a processing tank, a reservoir, a remover, a mixer, and a return path. Etching is performed on a substrate in the processing tank by immersing the substrate in a processing liquid containing a chemical liquid and silicon. The reservoir recovers and stores the processing liquid discharged from the processing tank. The remover recovers a portion of the processing liquid discharged from the processing tank, and removes silicon from the recovered processing liquid. The mixer mixes the processing liquid stored in the reservoir with the processing liquid from which silicon has been removed by the remover. The processing liquid mixed by the mixer is returned to the processing tank through a return path.