Process for making hermetically sealed filter units and filters made thereby
US5556541A · kind A · utility
64Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1994 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Apr 26, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the manufacture of hermetically sealed filter units and a product made thereby. The process comprises aligning a porous filter element between two housing parts and a thermoplastic skirt that overlaps the edge of at least one housing part to shield the edge of the filter element disposed adjacent to the skirt, pressing the housing parts together and then injection molding a thermoplastic overmold band around the outer portions of the housing parts to form a hermetic seal at the edge of the filter element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.