Degassing tube
US4787921A · kind A · utility
30Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Sep 10, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A degassing tubular device is provided having an inner tube of a porous polymeric resin positioned inside an outer tube of a porous polymeric resin, and having a tube-form body formed from a porous polymeric film interposed between the inner and outer tubes, wherein the porous polymeric film has a mean pore size of 0.2 to 3.0 microns. The inner tube, outer tube and film are preferably all of porous polytetrafluoroethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.