Grease filter
US6840975B2 · kind B2 · utility
10Cited by
11References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2003 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49604
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The grease filter is made with components that are secured together about the periphery of the filter by a seam with smooth surfaces. In one embodiment, the filter is constructed of three components, namely, a pair of plates and a rectagular or square frame. The peripheral edges of the plates and frame are interfolded on each other to form a rolled seam. The resulting structure is rigid and does not twist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.