Cleaning chemical for aluminium surface
US4857225A · kind A · utility
20Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Jan 11, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G1/125
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention offers a cleaning agent for aluminium surface which is an aqueous acidic liquid containing peroxo acid and/or peroxide in 0.05-10 g/l and further one or more kinds out of sulphuric acid, phosphoric acid and nitric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.