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:
Sep. 05, 2023
Filed:
Aug. 11, 2020
Mks Instruments, Inc., Andover, MA (US);
Gordon Hill, Andover, MA (US);
MKS Instruments, Inc., Andover, MA (US);
Abstract
A method is provided for cleaning of a processing system comprising a wafer processing chamber and a pumping line in fluid connection with the wafer processing chamber. The method includes initiating cleaning of the wafer processing chamber by activating a chamber cleaning source and initiating cleaning of at least a portion of the pumping line by activating a foreline cleaning source coupled to the pumping line. The method also includes monitoring, at a downstream endpoint detector coupled to the pumping line, a level of a signature substance. The method further includes determining, by the downstream endpoint detector, at least one of a first endpoint of the cleaning of the wafer processing chamber or a second endpoint of the cleaning of the pumping line based on the monitoring.