Process for manufacturing a microfilter
US4717455A · kind A · utility
5Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Nov 18, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2323/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for manufacturing a microfilter is such that a foil having an aluminum content of at least 99.95% and thickness 20-250 .mu.m is given a recrystallizing anneal, is etched in an electrolyte in stages at constant current density in the range 0.01 to 2 kA/m.sup.2, and the surface given a stabilizing after treatment to prevent hydration reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.