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:
Mar. 12, 2002
Filed:
Feb. 11, 2000
Applicant:
Inventors:
Katsuyoshi Ina, Iwakura, JP;
W. Scott Rader, Sherwood, OR (US);
David M. Shemo, Aloha, OR (US);
Tetsuji Hori, Iwakura, JP;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C09K 3/14 ; C09G 1/02 ;
U.S. Cl.
CPC ...
C09K 3/14 ; C09G 1/02 ;
Abstract
A polishing composition comprising an abrasive, an anticorrosive, an oxidizing agent, an acid, a pH regulator and water and having a pH within a range of from 2 to 5, wherein the abrasive is colloidal silica or fumed silica, and its primary particle size is at most 20 nm.