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:
Jun. 27, 2017
Filed:
Sep. 03, 2015
Applicant:
Lam Research Corporation, Fremont, CA (US);
Inventor:
Leonard Sharpless, Fremont, CA (US);
Assignee:
Law Research Corporation, Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C 9/24 (2006.01); B22C 9/10 (2006.01); B22C 1/18 (2006.01); B22D 25/02 (2006.01); B22D 21/04 (2006.01); B33Y 10/00 (2015.01);
U.S. Cl.
CPC ...
B22C 9/24 (2013.01); B22C 1/18 (2013.01); B22C 9/105 (2013.01); B22D 21/04 (2013.01); B22D 25/02 (2013.01); B33Y 10/00 (2014.12);
Abstract
A method for casting an internal feature within an object is provided. An internal mold is formed from a mold powder, comprising a base powder and an acid powder mixed into the base powder. A molten material is cast around the internal mold. The molten material is solidified. The internal mold is reacted with water, wherein the reacting causes the acid powder to neutralize the base powder.