Porcelain coated substrate and process for making same
US5920977A · kind A · utility
6Cited by
26References
7Claims
0Family size
Inventors
Key dates
| Filing date | Dec 6, 1996 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Dec 6, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24802
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention provides for a sign consisting of an alloy substrate encapsulated in a porcelain coating which can be selectively applied to different areas of the substrate. The coating provides a smooth transitional region on graphic indicia of the sign to make the sign impervious to vandalism, fire and dirt. There is also provided a process of selectively applying a second coat of porcelain to the existing coating to only those elevated portions elevated or Braille portions of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.