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. 04, 2003
Filed:
Feb. 06, 2002
Applicant:
Inventors:
Terence M. Thomas, Newark, DE (US);
Craig D. Lack, Wilmington, DE (US);
Steven P. Goehringer, Newark, DE (US);
Assignee:
Rodel Holdings, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09G 1/02 ; C09G 1/04 ;
U.S. Cl.
CPC ...
C09G 1/02 ; C09G 1/04 ;
Abstract
An aqueous polishing composition having abrasive particles of a metal oxide has a pH that undergoes pH drift, because ions are provided by dissolution of the metal oxide, and the pH drift is minimized by providing the aqueous polishing composition with an equilibrium concentration of the ions at said pH.