Composite sheet having foamed polycarbonate resin layer and non-foamed polycarbonate resin layer
US6492015B1 · kind B1 · utility
4Cited by
0References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Dec 10, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249989
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite sheet having a first, foamed polycarbonate resin layer and a second, non-foamed polycarbonate resin layer provided on at least one surface of the first layer and having a melt tension of at least 2.45 cN at 250° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.