The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2025
Filed:
Aug. 30, 2021
Dsm Ip Assets B.v., Heerlen, NL;
Noel L. Davison, Echt, NL;
Mandy Maria Jozefina Wiermans, Echt, NL;
Nicolaes Hubertus Maria De Bont, Echt, NL;
Mark Kenneth Hazzard, Echt, NL;
DSM IP ASSETS B.V., Maastricht, NL;
Abstract
Disclosed herein is a polyurethane composite sheet comprising o a biocompatible and biostable polyurethane elastomer comprising polysiloxane segments, the polyurethane forming a continuous matrix of the sheet; and o a woven or braided fabric having a thickness of 15-150 μm and comprising biocompatible, high-strength polymer fibers; wherein the composite sheet comprises 10-90 mass % of polyurethane, has a thickness of 25-250 μm and an areal density of 5-300 g/m; and wherein the composite sheet has, in at least one direction, non-linear uniaxial tensile behavior characterized by a 1%-secant modulus of 20-200 MPa, a hardening transition point at 10-45%, and a tensile strength of at least 25 MPa (measured in water at 37° C.).