Method and apparatus for flow control
US5447689A · kind A · utility
32Cited by
32References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/54391
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Sizing materials are applied to porous substrates to retain fluids in the substrate for a discrete period of time. After that time period, the fluid is substantially completely released from the porous substrate. Sizing materials include alkyl ketene dimers, fluorocarbon resins, and fatty acid chlorides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.