Method of using a penetrating sealer
US6479102B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jul 24, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Jul 24, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F19/228
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of using a penetrating protective sealer to mark a message onto a porous surface is provided. Once the sealer has been applied to the surface and is allowed to dry, the message will not be visible. An indicator dye can be used to aid in application of the sealer; once the sealer has fully cured, the indicator dye is no longer visible. When the marked surface becomes wet, the portion of the surface that has been treated by the sealer will repel water; the remainder of the surface will absorb water and turn dark. The contrast in color created between the darker, untreated/wet, surface and the lighter, treated/dry, surface will result in a visible message to an observer. The message can be a warning or an advertisement. A thickened penetrating sealer composition and a method of using the same is provided. The thickened sealer results in neat, clean, crisp edges for the message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.