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:
Jan. 18, 2000
Filed:
Apr. 18, 1997
Applicant:
Inventors:
Christopher C Streinz, Aurora, IL (US);
Matthew Neville, Geneva, IL (US);
Steven K Grumbine, Aurora, IL (US);
Brian L Mueller, Aurora, IL (US);
Assignee:
Cabot Corporation, Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
2521861 ; 216 53 ; 2521821 ; 25218232 ; 2521834 ; 510175 ;
Abstract
A method for polishing computer rigid disks comprising bringing at least one surface of the rigid disk into contact with a polishing pad and applying a dispersion to the rigid disk to give a polished rigid disk having an rms roughness less than about 1.4 nm. Also disclosed is a dispersion and polishing slurry for polishing rigid disks.