Microvolume-liquid dispensing method and microvolume-liquid dispenser
US10221060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2015 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Dec 5, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D2210/0016
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided is a microvolume liquid dispensing method in which a variable capacity passage section of a liquid passage in a microvolume liquid dispenser is pressurized from the outside and shrunk in a direction that reduces the internal capacity thereof so that a liquid that is within the variable capacity passage section is pushed toward both a downstream passage section and an up stream passage section. A microvolume of the liquid is pushed toward the downstream passage section as a result of the downstream passage section having a much larger liquid passage resistance than the upstream passage section. It is thus possible to precisely drip a microvolume liquid of a picoliter order from the tip opening of a nozzle by simple control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.