Method of enhancing a soiled porous surface and maintenance thereof
US7071153B2 · kind B2 · utility
13Cited by
28References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2004 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Apr 29, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is directed to a method of enhancing the appearance of a soiled porous surface. The inventive method includes applying a concentrated, alkaline, cleaning composition to the soiled porous surface. This concentrated, alkaline, cleaning composition is then allowed to remain on the surface for a period of time before it is rinsed with water. After drying, a maintainer composition is then applied to the surface. The maintainer composition includes a pore-filling component. The cleaning composition includes an alkaline source and, optionally, a solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.