Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2007-09-04
2007-09-04
Tran, Thao (Department: 1711)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
C428S423300
Reexamination Certificate
active
10694681
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.
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Belliveau Brian Peter
Downie Robert Bruce
Dunlap Thoburn T.
Laferty Samuel B.
Lubrizol Advanced Materials, Inc.
Powell Joe A.
Tran Thao
LandOfFree
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