Embossed metallic leafing pigments
US5672410A · kind A · utility
110Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1993 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Feb 9, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for preparing embossed, finely-divided, thin, bright-metal particles which process comprises forming an embossed release surface to at least one side of a carrier sheet, depositing a metal film onto the release surface so that the metal film conforms to the embossed surface, solubilizing the release surface, removing the metal film from the carrier sheet, and breaking the thin metal film into embossed particles having an average diameter of between 25 to 50 microns. The film may also take the form of an optical stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.