Three-dimensional filter
US8709320B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2012 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Sep 21, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1031
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A three-dimensional filter includes a filter frame having a three-dimensional skeletal structure with a filter media connected to the skeletal structure. The filters are nestable. The skeletal structure may be trimmed and provided with walls to create standard sized filters. Methods for making the three-dimensional filter include injection molding of the skeletal structure onto the filter media, injection molding the filter media and the filter frame together in a single molding process, thermoforming a molded or extruded skeletal structure and the filter media, and needle punching a molded or extruded skeletal structure to create filter media within the skeletal structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.