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:
Oct. 19, 1999
Filed:
Nov. 12, 1997
Applicant:
Inventor:
Maria Ronay, Briarcliff Manor, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ;
U.S. Cl.
CPC ...
134-2 ; 134-1 ; 134-13 ; 134-3 ; 134 26 ; 134-6 ; 134 28 ; 134 29 ;
Abstract
A surface such as that of a semiconductor wafer is cleaned by contacting the surface with a cleaning composition containing a polyelectrolyte.