Method of the dosed application of a liquid onto a surface
US7247272B1 · kind B1 · utility
3Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method of the dosed application of a liquid onto to selected portion of the surface of a substrate (A) by means of spraying under the influence of an electric current. According to the invention the liquid is fed at a flow rate between 0.01 pl/s and 1 ml/s to a distal tip (3) of a capillary (1) having an inside diameter of less than 150 μm, wherein the distance between the distal tip and the surface (A) is less than 2 mm. Surprisingly it has been shown that it is possible in this manner to apply liquid to a restricted surface of a defined size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.