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:
Jul. 06, 2004
Filed:
Oct. 29, 2002
Applicant:
Inventors:
Virginia Chi-Chuen Chao, Essex Jct., VT (US);
Scott A. Estes, Essex Junction, VT (US);
Thomas B. Faure, Georgia, VT (US);
Thomas M. Wagner, South Burlington, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B 3/08 ; C23G 1/02 ;
U.S. Cl.
CPC ...
B08B 3/08 ; C23G 1/02 ;
Abstract
A method for forming for inhibiting the buildup of cerlum-containing deposits in a process tool is disclosed. The method involves spraying a solution of a dilute acid, preferably nitric or perchloric acid, through the chamber and bowl rinse nozzles of the process tool. The method is less time consuming than previous methods for inhibiting the buildup of cerium-containing deposits and can be conveniently carried out at the end of every shift.