Surface and its manufacture and uses
US6967101B1 · kind B1 · utility
15Cited by
27References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2533/30
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A method for rendering a surface covered by a plastic material more hydrophilic by treatment with a gas plasma non-polymerizable gas. The method is characterized in that the intensity of the plasma is selected so that the surface becomes permanently more hydrophilic. Also disclosed is a naked plasma treated surface of plastic having an immediate water contact angle of ≦30°, said water contact angle is changed ±20 and/or less than 5% upon washing with an ethanol/water mixture (70% w/w).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.