Polymeric microfluidic valve
US11867320B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 4, 2019 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Mar 4, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K2099/0084
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a polymeric microfluidic valve, an adhesion control surface with discrete micro- or nano-scale structured surfaces are separated by fluid filled voids at an interface between an elastomeric membrane seals against a substrate layer. The structured surfaces reduce adhesion between the membrane layer and the substrate layer and prevent permanent bonding, while at the same time providing a good balance of adhesion at the valve seat to provide a sealing engagement. Microstructured adhesion control surfaces on and around valve bodies permit opening the valve, by reducing contact surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.