Method of manufacturing a precision micro-filter
US5256360A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Mar 25, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of manufacturing a precision micro-filter and a micro-filter manufactured thereby is disclosed. A micro-mold is manufactured using micro-machining technology (such as micro-electrical-discharge machining technology, laser-beam micro-machining, electron beam micro-machining) to make a filter mold with a plurality of rod-like protrusions, of the shape, dimensions, and spacing required for the pores of a finished micro-filter. A molding material is placed into the micro-mold, the molding composition is allowed to solidify to form a micro-filter, the passageways of which conform precisely to the rod-like protrusions of the mold. This micro-filter is then separated from the micro-mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.