Method for protecting substrate
US8906298B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 10, 2009 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Sep 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31507
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preventing or reducing contamination of a surface of a substrate, or protecting a surface of a substrate by making a surface of a substrate hydrophilic, by means of arranging, successively in relation to the substrate, a first layer containing a negatively-charged substance, and a second layer containing a positively-charged substance or containing a positively-charged substance and a negatively-charged substance on the surface of the substrate or in a surface layer of the substrate. In accordance with the present invention, a novel method for preventing or reducing adhesion of contaminants, and color degradation or color change of a substrate over time, can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.