Patent · US Expired

Coated composite material for lining passages

US4521465A · kind A · utility

9Cited by

11References

18Claims

0Family size

Assignees

BAYER HEALTHCARE LLC · DE
Graboplast · JP

Inventors

Walter Schroer · Leverkusen, DE
Gyula Wlasitsch · Kyoto, JP

Key dates

Filing date	Jul 18, 1983
Grant date	Jun 4, 1985
Priority date	—
Expiry date	Jul 18, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2369
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A bonded composite laminate is provided comprising a textile layer and a plastic film which contains polyurethane urea coating which laminate is suitable for lining and repair of pipelines and canalizations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.