Apparatus for testing compositions in contact with a porous medium
US6878344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2002 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for use in testing a plurality of compositions in parallel. The apparatus includes an upper plate having a plurality of openings extending therethrough to form upper fluid chambers and a lower plate having a plurality of openings extending at least partially therethrough to form cavities. A central plate having a plurality of openings extending therethrough to form central fluid chambers is positioned between the upper and lower plates with the central chambers in alignment with the upper chambers and the cavities. A porous sheet is interposed between the upper and central plates such that an upper surface of the sheet is in contact with fluid within the upper chamber and a lower surface of the sheet is in contact with fluid within the central chamber. The apparatus further includes a flexible membrane positioned between the lower and central plates such that changes in pressure within the cavities or fluid chambers cause deflection of the membrane to force fluid to pass through the porous sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.