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. 26, 2026
Filed:
May. 17, 2023
Screen Holdings Co., Ltd., Kyoto, JP;
Mitsutoshi Sasaki, Kyoto, JP;
Manabu Yamamoto, Kyoto, JP;
SCREEN Holdings Co., Ltd., Kyoto, JP;
Abstract
An upward laminar flow of a treatment fluid is formed inside a treatment chamber. Substrates are immersed in the treatment fluid. Eight bubble supply pipes are disposed inside the treatment chamber, and supply bubbles in the treatment fluid from below the substrates. Two innermost bubble supply pipes out of the eight bubble supply pipes are disposed inside a recess of a punching plate so that the two bubble supply pipes are lower than the other bubble supply pipes. Even when a lifter lowers the substrates to an immersion position, an extremity of a back plate is prevented from hitting the two bubble supply pipes. Furthermore, the eight bubble supply pipes including the two innermost bubble supply pipes can uniformly supply bubbles to the surface of the substrates.