Polishing composition for memory hard disc
US4705566A · kind A · utility
20Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1986 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | May 21, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09G1/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition for polishing a layer of non-electrolysis nickel plating, an alumite layer or an aluminum substrate in a memory hard disc the composition comprising water, a polishing agent of aluminum oxide, and a polishing accelerator of one of nickel nitrate and aluminum nitrate, or two compounds, nickel nitrate and aluminum nitrate, or two compounds, nickel sulfate and aluminum nitrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.