Paper-based chemical assay devices with improved fluidic structures
US9452431B2 · kind B2 · utility
2Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2016 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Apr 14, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/086
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A chemical assay device includes a hydrophilic substrate and one or more hydrophobic structures that extend from a first side of the hydrophilic substrate to a second side of the hydrophilic substrate. A hydrophobic structure in the hydrophilic substrate forms a fluid barrier wall that extends from the first side of the hydrophilic substrate to the second side of the hydrophilic substrate with a deviation of less than 20° from a perpendicular axis between the first side and the second side. The hydrophobic structure is formed from a wax or a phase change ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.