Multilayered articles having biocompatibility and biostability characteristics
US7264858B2 · kind B2 · utility
9Cited by
19References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2003 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Oct 28, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31554
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Multilayer articles, such as tubing and films, are disclosed which have a soft layer of aliphatic polyurethane and at least one layer of hard aliphatic polyurethane. The articles formed avoid the problem of tackiness when using only a soft aliphatic polyurethane, while maintaining flexibility. The articles are also biocompatible and biostable and are suitable for use in medical applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.