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:
Nov. 12, 2013
Filed:
Sep. 22, 2011
Enrico Magni, Pleasanton, CA (US);
Eric Lenz, Pleasanton, CA (US);
Enrico Magni, Pleasanton, CA (US);
Eric Lenz, Pleasanton, CA (US);
Lam Research Corporation, Fremont, CA (US);
Abstract
Systems, methods and apparatus for making a chemical head including forming a first return chamber in the chemical head, forming a second return chamber in the chemical head, forming a plurality of first return conduits from a head surface to the first return chamber, forming a plurality of second return conduits from a head surface to the second return chamber and wherein at least one of the first return conduits and the second return conduits being formed at a first angle relative to the head surface, the first angle being greater than about 20 degrees to a meniscus plane normal.