Polymeric sheet having oriented multilayer interference thin film flakes therein, product using the same and method
US5424119A · kind A · utility
147Cited by
1References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1994 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | Feb 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polymeric sheet comprising a layer of polymeric material having a first and second parallel surfaces. A plurality of oriented multilayer interference thin film flakes are disposed in the layer of polymeric material. The flakes have first and second parallel surfaces and a width and a thickness and have an aspect ratio of at least 2:1 for the width with respect to the thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.