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. 24, 2016
Filed:
Feb. 25, 2011
Junhua Ding, Tewksbury, MA (US);
Scott Benedict, Nashua, NH (US);
Jaroslaw Pisera, Bedford, MA (US);
Junhua Ding, Tewksbury, MA (US);
Scott Benedict, Nashua, NH (US);
Jaroslaw Pisera, Bedford, MA (US);
MKS Instruments, Inc., Andover, MA (US);
Abstract
A pulse gas delivery system for delivering a sequence of pulses of prescribed amounts of gases to a process tool, comprises: (a) a plurality of channels, each including (i) a gas delivery chamber; (ii) an inlet valve connected so as to control gas flowing into the corresponding gas delivery chamber; and (iii) an outlet valve connected so as to control the amount of gas flowing out of the corresponding gas delivery chamber; and (b) a dedicated multiple channel controller configured so as to control the inlet and outlet valves of each of the channels so that pulses of gases in prescribed amounts can be provided to the process tool in a predetermined sequence in accordance with a pulse gas delivery process.