Seamless filter bag and method of its manufacture
US4983292A · kind A · utility
3Cited by
9References
7Claims
0Family size
Inventor
Key dates
| Filing date | Dec 9, 1988 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Dec 9, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/065
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of producing a closed end seamless liquid pervious article, such as filter bags, by rotating a mandrel in the flow path of a quanity of melted micro-woven filaments to collect the filaments upon the mandrel in multiple layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.