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:
Sep. 06, 1988
Filed:
Aug. 05, 1987
Applicant:
Inventors:
Tetsuji Senda, Aichi, JP;
Takashi Baba, Aichi, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24D / ;
U.S. Cl.
CPC ...
51293 ; 106-3 ;
Abstract
A composition for polishing a layer of non-electrolysis nickel plating, an alumite layer or an aluminium substrate in a memory hard disc, the composition comprising water, a polishing agent of aluminium oxide, and a polishing accelerator of one of nickel nitrate and aluminium nitrate, or two compounds, nickel nitrate and aluminium nitrate, or two compounds, nickel sulfate and aluminium nitrate.