Internally supported filter
US4394147A · kind A · utility
58Cited by
13References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Nov 30, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/4227
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An internally supported composite filter having a wire-like frame, two confronting sheets of filter media secured to the frame, a ring of adhesive at the center of the sheets secures their confronting faces together in a relatively uncompacted fashion, and a handle secured to the sheets proximate one of the corners of the frame which can be grasped by a workman to remove the filter from the mounting structure in a peel-away fashion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.