Candle filter element
US6860394B1 · kind B1 · utility
15Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1999 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Sep 13, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/70
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The multiple-tube filter proposed consists of at least one perforated filter element (15) whose outside surface has grooves (2) in a spiral round it, the surface between the grooves (2) preferably curving outwards in a circular arc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.